Rex is a large turquoise worm with yellow eyes. He wears a black collar. Rex pants and barks like a dog, like all worms in the series.
Role in series
Rex ironically leaves on the bus after SpongeBob praises his loyalty. Rex was only bought in an attempt to make Gary jealous and realize that he should return to his former master. The only trick he can do is "stay." He did not stay for long, considering the fact that he left almost immediately after he went to the bus stop. Then, SpongeBob gets another new pet and says "Who needs worms anyway?". It is unknown where Rex went afterwards.
He is seen in the "Dumped" segment of the book.
- Rex is similar to Jan the Worm and Mr. Doodles, but he has a color shade of light teal.
- Similar worms have appeared in other episodes, most recently in "Plankton's Pet."
- Rex resembles an underwater version of a dog as the sea snails represent underwater versions of cats. For example, when SpongeBob expects Rex to do tricks, he barks and pants with his tongue out.
- Rex ditches SpongeBob after only about 25 seconds of being with him.
- The asset discs for SuperSponge contain two model sheets for Mr. Doodles that are mislabeled as "Rex the Worm."
|Worms (V • E)|
Alaskan Bull Worm • Baby worms • BlackJack's guard worm • Clown worm • Earworm • French poodle worm • Guard worm • Jan • JK • K-9 Unit • Kenney • Max • Mipsey and Pipsey • Mr. Doodles • Mrs. Squiggles • Mrs. Wormsley • Nematodes • Peanut worms • Prickles • Rex • Siana the Worm • Snookiems • Spotted Glistening Meadow Worm • Tapey • Worm from Appleworld • Worm hogs • Wormy • Wolfworm • Fancy worm