Billy has a light pink-colored shell like Gary, but is lighter and glossy, and on his shell, there are no dots, just red lines like Gary's, but much thinner. He has green skin with a blue underside, styled black hair, and blue eyes. He has a brown leash and appears to be more sophisticated than most snails.
- When he says "meow," instead of saying it like most snails, his meow sounds like a human man's.
|Snails (V • E)|
Alley snails • Baby snails • Billy the Snail • Black snail (Bad Luck Day) • Black snail (One Krabs Trash) • Brain Gary • Bully snail • Dan the Orange Snail • Dani • Daniel the Snail • Dave's snail • Elephant snail • Elderly snail • Esmerelda • Foofie • Garibaldi • Gary the Snail • Ghost snail • Garyzilla • Gutford the Snail • Killer Snail • Haibi the Snail • Jellien Gary • Jerry • Large snail • Larry Luciano • Lary the Snail • Lawrence Whelk • Mary the Snail • Mary's ex-boyfriend • Mad scientist's snail • Mini Gary • Miss Tuffsy • Mrs. Puff's snail • Muffsies the Snail • Other snails • Pat the Snail • Picture-framed snails • Prehistoric Gary • Sea whelks • SnailBob • Snail Fail • Snail mom • Snail monster • Snellie the Snail • Victoria the Snail • Woolly mollusk