the walk cycle dream monster is revealed :y

Pink is a kindly and shy monster who is unfortunately hated and targeted by people who think they're a threat, so they're often attacked brutally when seen. They're also a pacifist and refuse to fight back, preferring to flee from threats.

They can't speak nor fly well and their voice sounds halfway between a growl and a shriek, and their attempts at smiling look more like snarls, but they try their best to seem likable to the few people who don't treat them like a monster.

PS those aren't scars on their wing, those are markings.