Let's try this...

[UmmonTL]

Hey, I wanted to try my hand at some sprites in my spare time since I saw multiple threads about needing them for item-arms, reward skins, themed worlds and just in general. Just started a quick little Ironman costume:

(just the front so far)
However I wanted to ask a few questions:

1. Is there a way to see what kind of sprites already exist in the game?
   I'd hate to redo something that is already there and it would help to have reference images for certain things.
   I'd also like to have a basic sprite for the new walls, if I decide to try my hand at themed worlds, and for the AI.
   
2. Is there any difference between cyborg and human costumes?
   
3. Could a reward skin replace the base sprite of a human or cyborg?
   Like the lizardman mutation or the automaton model so that other costumes would layer on top of that.
   
4. Are there any palette restrictions to the sprites?
   
5. Which sprites can be animated?