Fiona: The girl/mechanic in the group. has the power to change into a spinosaurus, also she is allergic to spiders.
Max: Is the captain of a football team, and has a crush on Fiona. he can turn into a T-Rex, and is the leader of the dino squad.
Buzz: Has a weird haircut that looks like a chainsaw, and is the coward in the group but when it comes to the Dino Squad he forgets all about it. He has the power to turn into a Pteradon. It is shown he has a small crush on Fiona.
Rodger: The Brain, the smartest. He's usually helping Fiona will new rides and weapons and has the power to turn into a Styracasoaurus.
Caruso: Only cares about his hair and himself, but would do anything for fame except put the dino squad in danger. He has the power to turn into a Stegasoaurus.
Mrs. Moyihan: she is a real velicoraptor, and over 65 million yrs. old. When there was a meteor shower a young velicoraptor (Mrs. Moyihan), she hid in a cave but rocks fell and blocked her way out. She was in there so long her DNA broke and she could transform into a science teacher. The show does not explain how she got out.