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Character
Gallery

Sinister Slug2.jpg
The Sinister Slug is an enemy of Mermaid Man and Barnacle Boy. He first appears in the episode "Mermaid Man and Barnacle Boy II" as a cardboard cutout, and later in "The Bad Guy Club for Villains."

Appearance

Sinister Slug in "Mermaid Man and Barnacle Boy II" is dark green, has red eyes, and has a purple symbol on his chest.

In "The Bad Guy Club for Villains" he looks far different.from his first appearance. He is a light beige color, full red eyes, sharp teeth, amd the symbol on his chest is now gone.

The Sinister Slug in his second appearance.

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