|List of characters|
Papa Plankton is the father of Sheldon J. Plankton.
He looks like his son, except he is yellow green, has a blue eye, instead of a red one, wears an orange shirt with red flowers on it and has a brown mustache.
He was born to Grandpa and Grandma Plankton. He had at least one sibling.
He married Mama Plankton.
He had one son named Sheldon J. Plankton.