Character Recommendations Based on Sheldon J. Plankton

Norville "Shaggy" Rogers
Scooby-Doo
Shaggy might be a bit of a slacker, but his heart – not to mention his stomach – is usually in the right place

Krusty The Clown
The Simpsons
Hey hey kids! Send cash to the studio in case Krusty has gambling debts to pay off