Prawn is a character in Battle for Bikini Bottom.
Prawn is the #1 enemy of Mermaid Man because he threw Mermaid Man's white socks in the laundry with all of Mermaid Man's red clothes, turning his socks pink. Superheroes can't have pink socks.
When SpongeBob turned off the Mermalair's power, releasing Prawn from his freezing chamber. SpongeBob used his bubble soap to create a bowling ball, which he used to strike Prawn out. He used the time to re-freeze Prawn in the chamber.