Easy character creation method (learned it today from my creative writing teacher.)
Think of as many adjectives as possible. (Let's say I make a list. Silly, Skinny, Funny, short, introspective, Gregarious, claptrap.) And then turn the ones that have somethign to do with a personality (Like funny and silly) Into actual characters.
So maybe Silly would always be happy, wears bright vivid colors, a dog fursona. Just keep adding to it and see where it goes!