Raised by animals and can transform into animals
Oc was born in (you choose). His mother died giving birth to him and when his father saw his red eyes (like alphas from teen wolf) he abandoned the baby in the wild, hoping the animals Would kill him.
Oc is crying when an animal (you choose what species) Approached him when oc sees the animal his red eyes glow and then he transformed into the baby version of that animal.
He is raised by the animal that found him and he never transformed back into human, but he did transform into other animals when needed and then transformed back into the original animal.
He looks exactly like the animals he transforms Into, the only way you can tell he isn't an actual animal is that no matter what he transforms into he has red eyes.
Years pass and he is happy with his animal family.
When disaster hits and his family is killed by poachers.
In a horrendous rage he attacks the poachers transforming into other animals multiple times.
When he stopped he is covered in blood with dying poachers all around him, He watches them die with pure satisfaction.