Chester and Chelsea are elderly Changyuraptor couple who were two of Mr. Conductor's first passengers. When Mr. Conductor took them to Lizard Island Station, they liked it so much that they stayed there. Years later, Chester and Chelsea live on Lizard Island with their many children and grandchildren, having overhunted the lizards, causing the island to be overgrown and full of insects. After Mr. Conductor and the Pteranodon kids took them on a tour of the island in search of lizards, they were convinced to return to Changyuraptor Valley Station and move their family there permanently.
Chester is Chelsea's husband and Chandler's grandpa. He has blue, brown, and white feathers.
Chelsea is Chester's wife and Chandler's grandma. She has brown and white feathers.