Sponge of Mystery
Mermaid Man and Barnacle Boy II 36
Aliases: SpongeBob SquarePants
Physical appearance
Gender: Male
Color: Light yellow (with light olive green holes)
Eye color: Light blue
Classification: Sponge
Friends: Mermaid Man
Barnacle Boy
Enemies: Atomic Flounder
Dirty Bubble
Series information
Appearance: "Mermaid Man and Barnacle Boy II"
Portrayer: Tom Kenny
List of characters

The Sponge of Mystery is an alter-ego of SpongeBob who appears in the episode "Mermaid Man and Barnacle Boy II."


He looks like SpongeBob wearing underwear, a black colored mask, and a pair of dark green gloves.

Octavius rex2
"Octavius Rex, a.k.a. long, tan, and handsome!"
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