It contains pale beige chum sandwiched in between a sesame-seed bun.
Role in series
Plankton gives out chumburgers to his fellow classmates along with Mr. Krabs and his Krabby Patties, in an attempt to see who has the better burger. When Plankton's classmates eat both of their burgers, they dislike the chumburger but adore the Krabby Patty.
Plankton tries to sell a chumburger to a little boy, but he fails to do so.
Plankton hands out free samples to Bikini Bottomites disguised as Krabby Patties with intent of ruining the Krusty Krab's good name.
It reappears and is one of the foods that can be made at the Chum Bucket. It needs one chum patty and bun in order to be made. It takes two hours to make, gives two happiness when collected, and gives one happiness when fed to a Bikini Bottomite.
- Coincidentally, the name of the chumburger sounds like the Yumburger, the flagship burger of the Philippine fast food chain, Jollibee.