@RiverTheSeawing
What characters do you have that aren't from earth or the main planet in your storyline?
Here's one of mine: https://drive.google.com/file/d/1wnO1PQjwz0t4IWKT24D04RHROM9_goYj/view?usp=sharing
Her name is Nebula and her species have great hearing that, a really long time ago, used to give them the ability to see, to an extent, with their eyes closed. This ability came from their antenna, the antler-like things, and would be disrupted if someone touched them or spoke really close to them.
While using this ability, they can only see details that they already know, so someone who they met while using this ability would just look like the average silhouette until the details they were missing were filled in. This ability is also only in black and white and they can't see color with their eyes closed.
They also can't read or look at images as you can't hear text or pictures.
Over the years, they stopped using this ability and became just as reliant on their sight as humans are.
However, a few of them still know how to use this ability.
Nebula is one of these. She was born blind, so she relied mainly on her hearing and was born automatically using this ability. Over the years, it has served as a crutch for her sight.
She doesn't trust many people, as there are often things you have to look for in order to tell if something is wrong with them. Voice changers are also a good way to mess her up.