Mermaidman and Barnacleboy defend Bikini Bottom from some dastardly villains!
SpongeBob skips class to go to a Mermaidman & Barnacleboy book signing!
Tired of being a side kick, Barnacle Boy becomes a villain!
SpongeBob gets ahold of Mermaid Man's utility belt!
When the undersea superheroes go on vacation, SpongeBob house-sits!
The senior superheroes are back!
It's a jar opening emergency!