Physical appearance
Gender: Male
Color: Green
Eye color: Light yellow and red
Classification: Plankton
Siblings: Moe Bros and Ella Plankton
Parents: Seymour and Basia
Nephews: Gordon Plankton and Silas Plankton
Sheldon J. Plankton (grandnephew)
Series information
Appearance: "A Plankton Family Tree"
List of characters

Alvin is the granduncle of Sheldon J. Plankton and only appears in "A Plankton Family Tree."


He is the same shape as his mother, Basia, but sports a pink top hat with a red ribbon


He was born to Seymour and Basia in Bikini Bottom. He has three siblings: the Moe Bros and Ella Plankton.

At some point, according to Plankton, "he disapeared without a trace. All they found was his hat in a pool of ketchup."

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.