here is a current list that will 100% be updated later but I am just bad at coming up with characters :)
Simon: Gary Green (Legends of Tomorrow), Todd Chavez (Bojack Horseman), Vax'ildan (Critical Role)
Sarah: Glimmer (She-Ra & the Princesses of Power)
Marie-Kate: Pacifica Northwest (Gravity Falls), Sarah Lynn (Bojack Horseman),
Chloe: Marceline the Vampire Queen (Adventure Time)
CJ: Millie (Helluva Boss), Robin Buckley (Stranger Things), Jim Jimenez (Our Flag Means Death), Anthony J. Crowley (Good Omens)
Asia: Kara Danvers (Supergirl)
Logan: Dipper Pines (Gravity Falls)
Lucas: Jesse Cosay (Infinity Train), Foggy Nelson (Daredevil)
Adam: Dick Grayson (Young Justice), Larry Trainor (Doom Patrol)
Noah: Jake the Dog (Adventure Time), Garfield Logan (Teen Titans), Ryan Akagi (Infinity Train)
Dean: Dean Winchester (Supernatural), Eugene Fitzherbert (Tangled), John Constantine (Legends of Tomorrow), Steve Harrington (Stranger Things)
Henry: Amity Blight (Owl House), Roman Sanders (Sanders Sides), Nancy Wheeler (Stranger Things), Daphne Blake (Scooby Doo)
lol part two, ignore my strange fandom taste
Madeline: Emma Frost (X-Men), Poison Ivy (DCAU), Kilgrave (Jessica Jones), Allison Hargreeves (Umbrella Academy)
Samantha: Sara Lance (Legends of Tomorrow)
Payton: Rita Farr (Doom Patrol)
Julianna: Aziraphale (Good Omens), Willow Park (Owl House)
Ava: Vex'ahlia (Critical Role), Grace Monroe (Infinity Train), Castiel (Supernatural), Sophie Hatter (Howl's Moving Castle)
Faith: Haruhi Fujioka (OHSHC), Lake (Infinity Train), Five Hargreeves (Umbrella Academy)
Becky: Harley Quinn (DCU), Luz Noceda (Owl House)
Peter: Chandler Bing (Friends), Draco Malfoy (Harry Potter), Sam Winchester (Supernatural), Hunter (Owl House)
James: Moxxie (Helluva Boss), Howl Pendragon (Howl's Moving Castle)
Xavier: Alastor (Hazbin Hotel)
Jason: Jonathan Byers (Stranger Things), Klaus Hargreeves (Umbrella Academy)
Malcolm: Marshall Lee (Adventure Time), Whizzer (Falsettos), Sebastian Smythe (Glee)
Marcus: Damian Wayne (DCU), Billy Hargrove (Stranger Things), Oliver Queen (Arrow, not the DCU. They are quite different)
Praxis: like Peril from Wings of Fire, but way more chill, and Wind powers instead of flames.
Arthur: Draluc( The Vampire Dies in No Time) but pent up energy
Toshina: Like Sothis(Fire Emblem Three Houses) but a bit more compassionate. Also is specifically a dragon.
For some reason its pretty hard to describe most of my characters with other fandoms… weird