The sea ants are dark red ants who are around the same size as Plankton. They have small antennae and bulging blue eyes. Most of them do not wear any clothes except for a necktie, but some of the higher-ranking sea ants in charge of the group also wear fedoras to distinguish themselves as the leaders.
The sea ants seem to be simple-minded creatures. They will happily work for anyone who would be willing to pay them, but they often mess up the instructions given to them, as seen when they bring the Krabby Patties to SpongeBob's house instead of the Chum Bucket, and later bring everything in SpongeBob's house to Plankton, including Plankton's tape recorder which was rigged to explode.
Role in game
Their role in the game depends on whether the player is playing the Wrong Side storyline or the Right Side storyline.
In the Right Side, Plankton recruits the sea ants to assist Robo-Krabs in stealing Krabby Patties from the Krusty Krab, which is easily accomplished because Squidward is the only one there at the time and he is sleeping on the job. However, when the sea ants try to go back to the Chum Bucket, Robo-Krabs malfunctions and they lose control of him. Robo-Krabs goes on a rampage all over Bikini Bottom, and the sea ants finally regain control over him as they encounter Mr. Krabs and SpongeBob on Krabs' pirate ship. The two of them are laughing at Plankton's "college-educated plan," which angers Plankton into ordering the sea ants to power up Robo-Krabs' weaponry, but they accidentally activate the self-destruct sequence instead. The sea ants evacuate Robo-Krabs and try to save the Krabby Patties, but the explosion destroys all the patties.
In the Wrong Side, the sea ants are instructed to take the Krabby Patties from SpongeBob after he retrieves them from the Krusty Krab. Due to a misunderstanding on their part, though, they bring the patties to SpongeBob's house instead of the Chum Bucket. Frustrated, Plankton tells the sea ants to go back and bring the Krabby Patties to him, but they confuse his instructions again and bring all the objects in SpongeBob's house to him, including one of Plankton's tape recorders, which was primed to self-destruct. As the sea ants return with all of the stuff, Plankton notices the recorder and quickly evacuates all the sea ants, just as the Chum Bucket explodes and collapses.