Jan is the worm who is with the customer by his side and it was seen in the episode A Pal for Gary. Mr. Krabs says that he doesn't even say that he was buying a pet a Krabby Patty. So he offers them two Krabby Patties at regular price. Mr. Krabs has a strict no-pets-allowed policy at the Krusty Krab but will let Jan in because he will not lose his customers. This makes SpongeBob incredibly sad because he realizes he has been a bad pet owner. He only appears in the hit T.V. series "The Adventures Of Gary The Snail". His first apprentence was in the last episode of season one called "The Snowball Fight!"