SpongeBob holding a Kelpo box.
Kelpo is a cereal that SpongeBob eats in the beginning of the episode "Shanghaied." It appears frequently in the SpongeBob SquarePants series . The brand's most prominent featuring was in "Waiting," when SpongeBob needed to collect 99 box tops from Kelpo boxes to obtain a free toy in the mail. It is most likely a parody of Cheerios.
Appearance
Kelpo resembles a small, yellow box. There is also an image of a kelp with a face, named Kelpy. The word "Kelpo" is also written at the top in blue.