Don is a green Pteranodon and is a member of the Pteranodon Family. He is the third sibling in the Pteranodon Family. His other siblings is Shiny, Tiny and Buddy. He lives with his mom, Mrs. Pteranodon, and his dad, Mr. Pteranodon. He is the youngest Pteranodon in the family.
He love collecting all kinds of things for his collection. He also has a taste for bugs. When he is happy he usually sings "La la loo". He also acts like the youngest and often talks to Buddy about riding on his head he grows in a giant T-Rex. He is almost always seen with Shiny and Mr. Pteranodon. He also calls the Conductor "Mr. The Conductor." He loves to have fun by digging holes.