Planktonella is an alter-ego of Plankton. She only appears in the episode "Eek, an Urchin!"
She has green legs, and a green face, but a dark blue cactus-shaped body, with a pink and light pink polka dot bow on the top spike. She has a red eye, and one eyebrow.
She is used to get rid of the urchin infestation of the Krusty Krab
. She was made by Eugene H. Krabs
and SpongeBob SquarePants
, to attract the real urchins to her.