robin

Barnacle Boy

In Spongebob Squarepants, Barnacle Boy is Mermaid Man’s sidekick. He is slight more sane than his counterpart, but is treated like a child by him despite his now elderly status.

Nightwing

Dick Grayson adopts the identity of Nightwing after outgrowing his position as Batman’s sidekick Robin. Like his mentor, Nightwing’s parents were murdered by a mobster in Gotham when he was just a young boy.