The Dirty Bubble is a villain on SpongeBob Squarepants.
In "The New Adventures of Mermaid Man and Barnacle Boy", The Dirty Bubble is their Number 1 most arch nemesis. His powers are to trap Mermaidman and Barnacleboy by his Surface Tension. Spongebob defeats him in this fiend's first appearance with a pencil. He is voiced by Charles Nelson Reilly in his first appearance, and then he decided to quit the show, making Tom Kenny the current voice of this fiend since "Mermaid Man and Barnacle Boy II".