The Jurassic Creeps are a gang of mechanical evil dinosaurs and are the archenemies of the Dinobonoids.
- Triceratron (voiced by Frank Welker) - a mutant robot orange Triceratops and is the leader of the Jurassic Creeps and he is the enemy of Professor Gaylord.
- Jurassic Creep #2 (voiced by Dee Bradley Baker) - a mutant robotic turquoise Parasaurolophus and he usually speaks a bit.
- Jurassic Creep #3 (voiced by Greg Eagles) - a mutant robotic purple Albertosaurus who is one of the shorter members, but still big and he just spoke a little bit.
- Jurassic Creep #4 (voiced by Quinton Flynn) - a mutant mechanical red Dryosaurus who likes to destroy things like other villains and he just spoke a little too.
- The were other Jurassic Creeps that weren't seen as toys and they were seen in the begininng in Toys Will Be Toys. There was a yellow Megalosaurus, a red Baryonyx, a green Allosaurus (all seen with Triceratron), a blue Corythosaurus, a dark green Deinosuchus, a light yellow Pachycephalosaurus, and a violet red Apatosaurus (all hit by Billy).