Teggs Horatio Stegosaur is the main protagonist/hero of the Astrosaurs and Astrosaurs Academy books. Teggs is an orange-brown Stegosaurus that is about twenty-five years old, and is part of an important family leading back to Zac Stegosaur, a herbivore leader during the dinosaurs' original escape from Earth. Living on his parents' farm for a large amount of his time, he helped out on the farm with his father but still found the time to research enough to pass his entry exam for Astrosaurs Academy. After his final space exam he became the captain of the Sauropod, and all of the ship's crew work for him. Gipsy, Arx and Iggy serve as his highest-ranking officials.