Nemo (Chip 'n Dale)

Nemo is a killer whale, and the star of a show at "SeaLand". Captain Finn tried to kidnap him in the episode "A Creep in the Deep", by blowing up a concrete wall of Nemo's tank.

Trivia

 * Nemo was named after Captain Nemo from 20,000 Leagues Under the Sea while Captain Finn was based on him.