Sheldon Jim Plankton, Jr. or simply Plankton, is a fictional character on the American television cartoon series SpongeBob SquarePants. He is voiced by Mr. Lawrence. The character is also in video games and other media based on the series. Additionally, he has been featured on countless toys, games, dolls, and other popular merchandise items.
Someday old Planky will steel that Krabby Patties formula, but Mr. Krabs highly doubts it.
I AM SURE OF IT!!!!!!!!!!!!!!!!!!!
Plankton is a lot like both Dr. Doofenshmirtz & Wile E. Coyote (I think).
Pie Charts
Here are some pie charts, calculating the percentages of Plankton's personality.