Gil's favorite book is 'Secret Agent Stories' in Check It Out!.He was however, wearing one during the pop song in Super Shrimptennial Celebration In The Grumpfish Special!, Gil was the only one who wasn't wearing a chef's outfit.In the episode, 'Bring on the Bugs', he got over his phobia. It is revealed in Happy Clam Day! that Gil is afraid of bees, however this is never addressed again.Grumpfish!, it is revealed that he loves cookies. In Super Shrimptennial Celebration, during one of the sketches Molly is the target instead of Gil.Gil is named after the gills of a fish.Gil (along with Molly and Bubble Puppy) is often used to represent the show on merchandise and other things.Gil is the only guppy with a one-syllable name (despite the two-syllable name Molly calls him, 'Gilly').He has done one in Call a Clambulance! and The New Guppy! Gil has done a lunch joke, he has done two lunch jokes so far.Gil's lunch box is the same color pattern on his tail, but it is blue instead of green.Gil is often the target of the jokes in his and Molly's sketches, usually being chased away by an animal or the Little Fish and sometimes is gullible for doing anything else.

Gil is the only one out of the guppies who screams.Gil is the only guppy to appear in every pop song.Gil has had the most appearances as a main character (followed by Molly).

Cupcake gil bubble guppies