Misuto

Misuto was a non speaking daycare kid who never appeared outside the first season he wore always a white eyepatch

personality: Misuto was very serious and edgy but also very shy

species: unknown possibly demon or superhuman

abilities: according to him if a person looked the patch covered eye uncovered it would take their soul possibly demon or superhuman powers flight durability( survived an explosion in a train car)

weaknesses: still has some human weaknesses