jason is a 30 year old hotel manager who sort of lives his sister's life for her, he's raising her daughter, and doing all the parent things. he got kicked out of his parents' house when he was 16 so he never really... quite outgrew acting like a kid at home, he's still really immature in a lot of ways (mostly in his romantic relationships, he's dating an eighteen year old) even though he's been taking on responsibility the majority of his life. i wish i could compare him to a character from a movie or something but i'm blanking. he surrounds himself with friends who act like they're still in a fraternity and has no intention of settling down when really he's capable of being quite domestic and that sort of life would probably make him happy (judging by how much fun he has taking care of his niece and jungle cat).