|Occupation(s):||Insurance Salesman (possibly formerly)|
|Spouse:||Mama Plankton (wife)|
|Children:||Sheldon J. Plankton (son)|
|Parents:||Grandpa Plankton (father)|
Grandma Plankton (mother)
|Nieces:||Plankton's Female Cousins|
|Nephews:||Plankton's Male Cousins|
Dead Eye Plankton
|Other relatives:||Karen (Daughter-in-law)|
|First appearance:||Hooray for Dads!|
|Latest appearance:||Hooray for Dads!|
|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 married Mama Plankton.
They had one son named Sheldon J. Plankton.
According to Nicktoons Unite!, they may have had more children as Plankton says, referring to his mother, "I was always her favorite."
At some point, he obtained the job of Insurance Salesman
- Hooray for Dads! (books)
- "Frozen Face-Off" (mentioned)
- Plankton's Special Sinister Commentary (mentioned)