Bubbie doesn't appear in "Fish Heads."
It is learned that Dr. Barber experiments other creatures to make one of his own.
In "Fish Heads," it is learned that K'nuckles saved a piece of candy and considers it to be the last piece if K'nuckles and Flapjack are near death. But it got eaten by the fish heads.
Introduced Island(s): Fruit Island, where fruit grows.
"Fish Heads" aired on March 26, 2009 at 8:30 PM.