Sinister Slug

Sinister Slug

The Sinister Slug has only appeared in the episode: The Bad Guy Club for Villains. He is a slug that most likely lives in sewers.

Looks

He has red eyes, and looks like a green sack. He also has very sharp teeth.

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Mermaid Man and Barnacle Boy

Episodes of SpongeBob: I • II • III • IV (cameos) • V • VI: The Motion Picture • Night Light • Mermaid Man vs. SpongeBob • The Card • Ditchin' (cameos) • Shuffleboarding (cameos) • SpongeBob's Last Stand (non-speaking cameos) • Back to the Past • The Bad Guy Club for Villains • Mermaid Man Begins • Super Evil Aquatic Villain Team Up is Go! • Patrick-Man! • Mermaid Pants • Man Ray Returns • Appointment TV • Dirty Bubble Returns • Captain Pipsqueak • The Dirty Bubble Bass Episodes of Kamp Koral: Mermaid Men and Barnacle Boys Episodes of TPSS: X Marks the Pot • Super Sitters Characters: Dirty Bubble • Man Ray • Barnacle Man • Atomic Flounder • The Moth • Kelp Thing • Reflecto • Sinister Slug • Jumbo Shrimp • Every Villain Is Lemons • The Chief • Super Acquaintances • The Quickster • Elastic Waistband • Captain Magma • Miss Appear Places: Mermalair • Shady Shoals • Hotel Evil • Locker of Memories • Time Machine Nickelodeon Magazine Comics: Mermaid Man Cleans Up • Hungry for Heroes Other: The Mermaid Man and Barnacle Boy Book • Time Machine • Fiber • Tickle Belt • Mermaid Man and Barnacle Boy Fan Club • Magic Claw • Man Ray's Power Glove • Mermerang • Dirty Bubbles' Bubble Launcher • Mermaid Man's Belt • Mermaid Man and Barnacle Boy Bran Flakes • Breakfast Bites • Mermaid Man and Barnacle Boy Paddleball Set • Mermaid Man and Barnacle Boy Trading Card No. 54 • The Mermaid Man and Barnacle Boy Movie • Mermaid Man and Barnacle Boy Video • Mermaid Man and Barnacle Boy Fridge Magnet • Orb of Confusion • Mermaid Man Watch

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