Barnacle Boy is a character in SpongeBob SquarePants. He is the sidekick of Mermaid Man. He is voiced by Emmy Award-winning comedian as well as actor, Tim Conway. He, along with Mermaid Man, are superheroes. He is a parody of both Aqualad and Robin. Barnacle Boy was said to be 68 years old in "Mermaid Man and Barnacle Boy V".