Nat "Nathaniel" Peterson is a minor character in the T.V. series Spongebob Squarepants. He is a yellow and purple fish, whom does appear in many episodes with only one major role. In his only major role, he is Plankton's regular, see the episode of the same name, he is paid by Karen to eat Plankton's chum so he would stop whining about it. In the end, Nat has to get his stomach pumped four times! His first name was revealed during the events of the episode.He is also the leader of Snail Po, according to Missing Identity when his last name is revealed. Nat appears to have many different jobs in the series. He is currently married to Abigail-Marge, but he divorced Shubie and Martha Smith. He wears blue pants, and is voiced by Dee Bradley Baker and Tom Kenny on most occasions and Rodger Bumpass, who voices Squidward on one occasion.