I should probably explain a bunch of things since Finns only ever been a character I doodled here and there. He's a guy who hangs out with Jessie and mostly bugs him a lot, flirting with him purely to get on his nerves. He mostly just wears whatever he thinks looks cute, regardless of whether its supposed to be for his gender or not (I think I've mentioned that before but never drawn it). His wardrobe consists pretty much entires of black and white, and checker patterns. He practices hypnosis for relaxation and stuff like that, though he often claims to have been trigger words into Jessie's head that'll make him his pet for a bit, even though he hasn't. It helps keep Jessie in check mostly.

Does it count as a character redesign if its just their hair? Finn decided to dye all his hair pink since he got tired of Jessie calling him a pink skunk with his old dyed bangs