Tropes applying to Medea's alternate selves Seraphim (with Emma Norrington, Jr.) and Asura (with Laurel Nasuka) 

Blood Knight: Asura is not fighting in the Atlantic War for glory or survival. She fights because she enjoys it...and she's very good at it. On the other hand, Seraphim originally didn't seem to be this, wearing a serious posture, but while she's pummeling Warren, her expressions reveal she's having a blast.

Always a Bigger Fish: Asura and Seraphim are the bigger fish, being the last resort used by Medea and Laurel/Emma Norrington Jr.

Good Is Not Soft: Both of them in their own way:

• Asura was birthed to be a powerful ally for The Alliance in their war against Oceanus' dragon army. But it soon became clear that she had her own ideas about how to win the battle. When advised to merely incapacitate their foes, Asura had other plans in mind. She charged into battle with a fierce determination, ready to obliterate anything and anyone who dared to stand in her way.  
• Seraphim's got a job to do: put an end to Sokar's rampage and ensure he never haunts the living again. But that's not all - she's also itching to deliver some sweet pummeling against Warren, and she won't let anything get in her way.

Arch-Enemy: Both of them have each their own:

• Asura is this to Oceanus since they deem each other Worthy Opponents and she was mostly created to deal with him.
• Seraphim is this to Warren Norrington, she was created for the sole purpose of beating him into going back to Hell.

Badass Baritone: Asura has a deep, stoic, serious, and threatening. Her tone doesn’t feel exaggerated or performative like Medea’s—she's naturally imposing. 

• Averted with Seraphim. She doesn’t speak, but when she does make a sound, it's unsettling. Her growls, hisses, and screeches aren’t just animalistic—they come out as a shrill, trilling shriek that almost resembles crazed laughter. The sound is jarring, almost too high-pitched for a being of her size and power.

Fusion Dance: Played with regarding Seraphim, since she is mostly an incredibly pissed-off Medea surviving Ahsmanet's possession and purifying her demonic power into angelic grace.

• Played straight regarding Asura. She is the divine god/host union between the Queen of the Underworld and her Eye.

Death Glare: Their default expression. Asura also puts it with the accompanying Slasher Smile and Glowing Eyes of Doom, to make it a deeply unnerving posture.

Bullet-Proof Fashion Plate: Both played with for in-universe Rule of Scary. As long as Seraphim stays outside the mortal realm, she’s practically indestructible. This gives her the luxury to enjoy the battle in a twisted way, letting Sokar rip her apart into bloody pieces only to regenerate right in front of him, as if nothing happened.as he contemplates his next move. It's a power move that she executes with style, not forgetting to regenerate her clothing alongside the rest of her, of course.

• As for Asura, her regenerative abilities are pretty impressive, but it takes someone with serious power, like Oceanus, to actually force her to tap into them. Otherwise, she's more than happy to dish out damage without needing to resort to healing herself.
  

Tropes applying to Asura:

The Ace: In her one and only appearance, Asura was the Alliance's secret weapon against Oceanus, held in reserve as their ultimate trump card.

Above Good and Evil: When it comes to her goals, she believes to be this.

Flight: While she may not have the ability to fly, Asura can still reach impressive heights thanks to her exceptional jumping abilities. In fact, she can jump so high that she's even capable of catching someone like Awakened Anthony mid-flight.

All Your Powers Combined: Every move, every tactic, all without the limitations of her mortal counterpart, Medea. No exhaustion, no nausea, no splitting headaches. Even Laurel’s usual chains to the Underworld don’t apply. She’s free of those weaknesses, making her an unrestrained force of destruction. With this endless arsenal at her command, Asura becomes a walking nightmare, practically unstoppable, tearing through whatever stands in her way.

Evil Laugh: Asura's massive fanged maw splits open in maniacal laughter whenever she finds herself entertained or impressed by someone who's able to put up a decent fight against her, a testament to her love of battle and thirst for worthy opponents.

Amazonian Beauty: She’s definitely easy on the eyes—no surprise, considering her divine half, Laurel, is basically a total smoke show, and Medea’s no slouch in that department either. But once she steps onto the battlefield, all that allure vanishes fast. It’s hard to notice her looks when all you can focus on is the cold, psychotic fury as she tears through everything in sight.

Story-Breaker Power: She can use Anthony's red giant Fire Scorcher to imbue Bakuretsu no Tenshi and provide it with Unbreakable Sharpness, which is exactly what obliterates Oceanus for good; for a more detailed explanation, see Bakuretsu no Tenshi's tropes below.

Hair-Trigger Temper: Much like Medea herself, Asura's quick to irritate, but unlike Medea, she is eager to pick fights and has the strength to back it up.

Large Ham: In stark contrast to Seraphim.

Ax-Crazy: Asura is more than just a typical Blood Knight on the battlefield - her overwhelming power, combined with the freedom and skill of Laurel and Medea, has pushed her over the edge, making her seem more like a demented serial killer than a seasoned combatant.

Superpower Lottery: This is not surprising given that she was created to be the perfect balance of a goddess and a human.

Teeth-Clenched Teamwork: With Anthony in The Atlantic War. Despite being allies and fighting alongside each other against their common foe, Oceanus, they're constantly at odds and competing with each other. Their dynamic is marked by frequent bickering and clashes of ego, each of them convinced that they are the stronger and more capable dragon.

24-Hour Armor: She never removed her armour after receiving it in the Underworld, though she chose to do so in order to outrun Okeanus.

Grin of Audacity: In a critical moment when Oceanus has Asura cornered and defenceless, Awakened Anthony steps in with his red giant fire scorcher, boosting the power of Bakuretsu no Tenshi to turn the tide of the battle. As the naginata roars to life with its Unbreakable Sharpness, Asura's anger-laden face momentarily transforms into a confident smirk, knowing she now wields the means to deal a decisive blow to the Tyrant Titan.

Combat and Support: During her team-up with Awakened Anthony, Asura and the V7D work in tandem to take on the colossal threat that is Oceanus. While the dragons unleashed heavyattacks on the Titan, the V7D leaped into action to provide a much-needed distraction. This diversionary tactic prevented Oceanus from fully focusing on the battle, giving Asura and the dragon god a much necessary upper hand.

Fiery Redhead: Asura's hair is a deep, almost sinister shade of pinkish-red, a darker and more ominous version of Laurel's signature hue.

Reality Warper: A downplayed example. Asura may not be able to warp reality at will, but her very presence is goddamn overwhelming. The sheer magnitude of her power can be felt throughout the world of the living, like a ripple in the fabric of reality itself. Those who are sensitive to such things can sense her approach from miles away, experiencing an eerie sensation on their skin that heralds the approach of something tremendously formidable.

Self-Duplication: After the Atlantic War came to an end, Asura was reluctantly forced to split herself back into her human and godly halves. Neither Medea nor Laurel has shown any desire to merge back into Asura. In fact, it seems like both of them are hoping to avoid that fate forever. The memories of what they shared—the raw power, the overwhelming chaos of the battles, and the monstrous intensity of their fusion—still linger. It’s not the kind of experience they want to relive..

Super Empowering: Apart from being capable of turning Kogeta no Tenshi into Bakuretsu no Tenshi, Asura has also displayed the knack for temporarily enhancing the physical strength and endurance of other living beings by enshrouding them within her own essence, provided their bodies can withstand it.. She restored Quincey's body and provided Miyuuki with part of her own blood so that the three of them might go as The V7D's divine, supernatural underworldly incarnation.

Heroic Neutral: Asura, being neither dragon nor mortal, owed no loyalty to Oceanus and was under no obligation to aid the mortals in their war against him. However, the promise of a long, drawn-out battle and the chance to beat the crap out of pretty much everyone involved proved too enticing to ignore.

Did You Just Punch Out Cthulhu?: Through a combination of Bakuretsu no Tenshi powered up with Anthony's red giant sunlight and Medea's Umbrakinesis, she is ultimately able to destroy Oceanus, a Draconic Abomination that not only was able to exist past its existing concept but was also described as a living extinction event itself. She literally blasts it to pieces and swallows his essence in her blade.

Godzilla Threshold: Medea didn't want to try the merging with Laurel because it would require her to be in a near-death state to fulfil the merging, which would be too painful to even attempt. And the reason they merged was mostly to save Medea's life, not because Laurel forced them to.

• Also the fact that Asura (as most mergings are) was incredibly unpredictable to trust her into finishing the job. 
• Medea's fear of losing herself was another significant factor in why the merging with Laurel was considered a last resort. The idea of giving up a part of herself and becoming something else entirely was a terrifying prospect, and Medea was understandably reluctant to take such a drastic step. 

The Berserker: Despite being fairly calm and serious around her subordinates and especially the ones she kind of cares about, Asura transforms into a full-on berserker whenever she stumbles upon any kind of monstrous threat. Her bloodlust becomes nigh-unstoppable when she fights alongside Anthony and she can plough through huge swathes of enemies without a single fear for herself, which is definitely reinforced by her powerful draconic Healing Factor, and role as The Juggernaut for the Alliance's forces. 

Awesome, but Impractical: The process of becoming Asura is a dangerous one, requiring Medea to be pushed to the brink of death and stabbed through the chest with the blade of Kogeta no Tenshi. One wrong move during the merging ritual could result in Medea's actual death.

• Medea also ended up in a six-day coma, temporal blindness, bodily scars, and a dragon arm after defusing, rendering her unable to perform her necromantic abilities as well as before.

Strong and Skilled: She is the combination of two heavyweights. Laurel is cunning and aggressive, and Medea is a skilled necromancer with a variety of techniques. This is the result of their collaboration and (Medea's) willingness to set aside her pride in order to create the ideal warrior. However... 

Cool Mask: She initially wears one shaped like Laurel's skull. It also serves as a helmet.

Big Damn Heroes: She arrives just in time to prevent Oceanus from melting Anthony's brains. She, however, tells the dragon that she could have intervened sooner; she was simply enjoying the sight of him getting his ass kicked.

Dimensional Cutter: Her Naginata Bakuretsu no Tenshi can literally cut holes between the Human and Under Worlds. 

Talk to the Fist: Don't expect Talking Is a Free Action to be in effect around this gal. If she is letting you talk, it's because she knows he can turn it around against you.

Too Powerful to Live: Had this gal been created earlier and stayed around, the Atlantic War would have basically ended in a couple of days. And I would've written off one of my main characters and most important goddesses at the same time. No chance in Hell.

Break the Haughty: Despite her immense pride in her own strength, even Asura begins to have second thoughts when the combined might of her and Awakened Anthony proves insufficient to defeat Oceanus. However, she correctly assumes that their exhaustion is due to the intense battles they've already faced - from her tearing through the enemy army to Anthony's struggles against the God of Tyranny.

Curb-Stomp Battle: Asura vs. well, pretty much anyone (bar Okeanous at his full strength) is a curb-stomp battle of epic proportions.

Dressed Like a Dominatrix: When Asura removes her armour to confront Oceanus, she reveals a striking black catsuit with purple accents and high-heeled boots. The sleek and form-fitting outfit is both practical and stylish, allowing her to move freely and showcase her impressive physical abilities while still retaining a sense of intimidating power and presence.

Lightning Bruiser: She's fast and strong enough to Curb-Stomp Battle almost everyone she faces.

Last Stand: In the Atlantic War, she serves as this for the army against Oceanus.

Excessive Evil Eyeshadow: Unlike most examples, she does it to remind people of her position in the divine hierarchy of the Underworld.

Anti-Heroine: Asura is not a "hero." She is a knight of unrivalled power. And someone who is all-powerful cannot be all-good. And she is fully aware of it.

Badass Arm-Fold: She holds this as her default stance when she's not in combat.

Instant Armor: At the time of Asura's birth, she was already adorned with armor that appeared to be a blend of Medea's priestess attire and Laurel's regal robes.

Troll: The first thing she does is speed past Awakened Anthony and do nothing but wait for him to register how fast she is; she has a great time messing with her opponent until he proves to be far more difficult than she anticipated (though she keeps up and ends up defeating Okeanus anyway).

Goth: In dress sense and personal stylings, not necessarily in demeanour. 

Deadly Upgrade: Fusing with Laurel into Asura creates a far more powerful warrior, but with severe side effects for Medea, including being knocked out for six days, permanent mystical white hair, and a temporary dragon arm that, while it grants her some bonus strength, completely evaporates any magical power she could use with her human left hand.

Smug Super: A trait she inherits from Medea. She’s very aware of her monstrous power and taunts Awakened Anthony over his weakness and smacking Oceanus all over the place. She even deliberately Flash Steps right past Anthony just to freak him out with how disturbingly fast she is.

Tropes applying to Seraphim:

Barbarian Long Hair: Her mane is glorious only for its sheer length, otherwise it's unkempt and warrior-like.

Horrifying the Horror: Seraphim has this built into her very being as a result of the Eye combined with demon power. She instils fear in Warren by the time she is close enough to start beating the seven shades of Hell on Sokar.

The Stoic: Unlike Asura, who seems to get a sick thrill out of ripping through armies and seems to relish every second of it, Seraphim is the complete opposite. She's quiet, deadly serious, and hardly utters a word. She doesn't hesitate to strike first and inquire later. Although as Omega Seraphim... that's a different story.

11th-Hour Superpower: At the end of the War, Medea uses the residual power within the Unbreakable Sharpness she had acquired from Bakuretsu no Tenshi to be able to assume the shape of the Seraphim whenever she wants, effectively merging with the angel changing to its perfected form.

All According to Plan: One of the story's prime examples. Seraphim smirks and begins putting herself back together after annoying Sokar into receiving his most savage beating yet, being launched from a building, and painfully teleported into Sokar's dimension. Sokar had no idea that being sent to his dimension was exactly what she wanted.

Superior Successor: Ahsmanet attempted and failed to put an end to Warren's evil. Seraphim, on the other hand, completed her sister's work.

Bad Powers, Good People: The Seraphim possesses rather horrifying powers (as you'd expect from an angel) and exhibits a relentless ferocity in her battle against Sokar. Nevertheless, even in her most intense moments, Medea remains a ruthless anti-heroine, driven by a sincere desire to do what's right.

The Chosen One: So to speak. During her big boss moment, Laurel makes it clear that Seraphim must be the one above the demonic hierarchy. See, Sokar may be a demon himself, a very powerful one indeed, but demons can't handle their own chaos. It takes an angel like Seraphim to keep them in line and maintain the natural order of things. Having a demon in charge would be like a major cosmic no-no, totally messing up the balance that Seraphim works hard to maintain.

An Arm And a Leg: Sokar rips her right arm off with a single punch and even rips both of her legs off during their showdown... but little did he know, her regenerative capabilities skyrocketed to godlike status the moment she entered his dimension..

Upgrade vs. Prototype Fight: She (the prototype) has this against Sokar (the upgrade). Though she could consider herself the upgrade for Ahsmanet's prototype.

Elective Mute: Medea is convinced that Seraphim has the ability to speak, but for some unknown reason, she refuses to use it. Every attempt Medea makes to engage her in conversation is met with silence. It's unsettling, though, because even without words, there's an eerie connection between them. Just a look is enough for Medea to... kinda sense Seraphim, pick up on her presence, even if the actual words aren't there to make sense of.

Family Theme Naming: With Sokar and Ahsmanet, the three of them are named or have names based on divine figures. The punishing Egyptian god Seker/Sokar, the primordial Egyptian goddess Amunet and the highest rank in the angelic hierarchy, the Seraphim.

Emergency Transformation: Plus possession, which saves her life just in time before she becomes the last obstacle that could make him unstoppable.

A Lighter Shade of Black: Though she's not shy about going for the kill as the first move when Medea's at risk or when facing any miscreant, it lacks the same sadistic streak you'd find in her demonic counterparts. Because it's an angel rather than a demon, its approach is more in line with that of a pragmatic soldier rather than a brutal, sadistic psychopathic beast – quite unlike most demons.

Red Filter of Doom: Once Seraphim starts gaining the upper hand against Sokar in his dimension, the colour scheme goes from cosmic purple to a blood-red light scheme, just to add to the creepy factor.

Guttural Growler: Though, unlike her counterpart, she doesn't speak much while transformed. However, there are times when her grunts sound husky and downright animalistic. That being said, this doesn't seem to be her but rather Medea talking, since when we see the two interacting within Medea's head, the angel never utters a damn word, ever.

Light Is Good: She is a white, bright-haired One-Winged Angel form for The Hero and Messianic Archetype of Norrington's Desire, then again this is a case of Good Is Not Soft.

Glass Cannon: Mixed with Fragile Speedster. Seraphim's default form is even more vulnerable to harm than an ordinary demon— at one point a single punch from Sokar actually blew one of her arms off — but her practically limitless regenerative powers mean she'll keep getting back up no matter how many times she's "killed" and traditional methods of demon extermination are useless on her.

Megaton Punch: Seraphim only bothers to use one solid punch to get the job done. Just ask Sokar. That said, Seraphim is capable of Rapid-Fire Fisticuffs, but as a side effect of the above trope, she prefers not to use it.

Angelic Abomination: Seraphim is loosely based on the angels of the Bible, who are basically described as Eldritch Abominations even though they're good beings, of course, this is downplayed as Seraphim is between Creepy Good and Humanoid Abomination. Still, she's the original angel, doesn't exactly exude a welcoming vibe, and ranks above all the demon bigwigs. Only Sokar is her equal. And only Anthony and Laurel outrank her in the power and authority department.

• Played a little more straight with Omega Seraphim, whose face now lacks many human qualities, resembling more a reptilian skull, has five horns and her skin is full of pointy scales.

Good Counterpart: To Sokar. Similar abilities, but Seraphim is the near-emotionless Dimensional Angel of the hero, and Sokar is the Hammy Demon Emperor of a villain.

Clingy MacGuffin: She's more of a proper character than a MacGuffin but still counts. If you take a look at how things go down every time Medea kicks into transformation mode, you'll see those demonic marks kick off right in her eyes and then spread out to cover her whole body. It's like that connection between Medea and Seraphim takes off from her eyes and sort of gets embedded there. And trying to pull the angel part away from the human would likely be a death sentence for her.

Show, Don't Tell: Unlike Asura and overall most of the cast in the story, Medea, as Seraphim, doesn't explain a lick of information about her powers besides their nature. Warren figured out she was screwed the moment she transported her out of the Mortal World once she started manipulating his dimension to enhance to godlike levels her regenerative factor.

Heroic Host: Seraphim is currently using Medea as her vessel, even though initially it seemed like she returned to Emma Norrington, Jr. to become Ahsmanet again, it seems an important chunk of her essence stayed with Medea.

Murder is the Best Solution: When it comes to sorting out issues, she's all about going straight for the heart with a stab and then seeing where things go from there. Fortunately for her, Medea tends to see eye to eye on these methods when dealing with adversaries. But, as fate would have it, Seraphim bonded with Medea at the exact moment Medea was trying to tone down her lethal tendencies, especially after making that promise to Nicoletta to keep her body count low. The timing couldn’t have been worse, really.

Token Evil Teammate: Seraphim essentially turns into the most ruthless, merciless, and lethal member of The V7D after she takes an interest and decides to remain in Medea's psyche. She is only called upon when the crew is faced with threats to their lives that cannot be handled with dialogue or a regular beating.

The Symbiote: In a certain way. Seraphim is made of the demonic essence of Ahsmanet, subjected to purification through its bond with the Nero Angelo; nevertheless, it emerges as a distinct, sentient angelic entity. The precise advantages reaped by this horned angel remain ambiguous, ostensibly encompassing the potential to derive sustenance from the necroplasmic energy that emanates from the wrongdoers eliminated by her and Medea. This Angel is basically eating on negativity and pain, and let's be honest, hanging around with Medea provides it with a bottomless buffet of those emotions. Having a seriously overprotective live-in partner has its perks for the host. Not only does it bring supercharged healing and serious combat skills to the table, but it's also like having a bodyguard that jumps into action even if you're knocked out cold or teetering on the edge of oblivion. Case in point, Seraphim once fixed up Medea's shattered spine after Mia had given her neck a good twist.

Rasputinian Death: Invoked by Warren/Sokar once he finally sent Seraphim to his dimension and was confident the battle was on his side again. Impaled, explodes, sliced in half twice (one of them sending one of her halves to the mortal realm), decapitated, crushing her head, setting her on fire, freezing her, dismembering her—it's implied Sokar spent at least a whole week ''killing'' Seraphim until she was able to get close enough to him to start taking offensive actions.

Royal ''We'': Seraphim isn't exactly thrilled when it's not acknowledged by its host. It tends to take it personally if Medea doesn't use those "we" and "us" pronouns when they're in full angelic mode. You can actually tell when Medea is about to transform because she starts slipping into that "we" mode of speech, signaling that she’s acknowledging Seraphim’s presence. But interestingly, Seraphim doesn’t seem to mind if Medea sticks to "I" and "me" when they’re not in their merged form.

Prehensile Tail: She demonstrates this ability during the encounter against Freki, when she wraps her tail around him and immobilizes him in an effort to suffocate the Tribal Chief.

No Biological Sex: As an angelic being, Seraphim doesn’t really fit into the usual categories of gender or physical traits. It’s not like she has any real sexual characteristics to speak of. Most people just refer to Seraphim as "it" because that seems to make the most sense for a creature like her. However, some of the other characters eventually start using “she” when talking about Seraphim, probably because of her resemblance to Medea. The curves are there, sure, but it’s more like a mimicry of Medea’s form than anything else. There are no visible nipples or private parts, which suggests Seraphim is copying the outward appearance without actually becoming fully female.

Literal Split Personality: After the battle with Sokar, Medea returned Emma's demonic essence as promised, but unknowingly, she kept Seraphim's power within herself. This act unintentionally caused the entity to split, creating two distinct beings. As time went on, it became clear that Seraphim had her own personality, entirely separate from Medea. In a later conversation, Medea reveals that seraphim and Ahsmanet they share the same origin—they were once one, descended from the same root. But after the intense battle with Sokar, that root was severed, allowing them to finally split and become independent of each other.

Boring, but Practical: Seraphim doesn't have any flashy abilities like Sokar's dimensional manipulation or Ahsmanet's body manipulation, but she has ridiculous, borderline god-like regenerative abilities, to the point where she spent an entire week being "killed" by Sokar in various ways until she was able to get close enough to him to actually start doing damage.