|Color||White (Skin), Red (Shirt), Black (Pants)|
|Lives In||Shady Shoals Retirement Home, Bikini Bottom|
|Best Friends||Mermaid Man|
|Voiced by||Tim Conway|
Barnacle Boy (born December 15, 1933) is Mermaid Man's side-kick. He is much more sane and aware than Mermaid Man. He also possess similar powers to Mermaid Man.
Barnacle Boy is some what thin. He wears a white sailor cap, a black mask and a blue cape. He also wears dark blue rubber gloves, boots, a red shirt, and rubber black underwear.
Barrnacle Boy possess almost identical powers to Mermaid Man.
According to Mermaid Man, all the powers they have are in their super hero suits.
He uses abilities similar to Aquaman's, including: the ability to summon and control sea creatures, high speed swimming and water balls (balls of water that form from the palms of his hands).