NOTE: Seth's surname (Yamamoto) is NOT canonical!
- Name: Seth Yamamoto
- Age: 28 (Paleocademy, 30 in Paleofuture)
- Hair Color: Blue
- Eye Color: Blue
- Height: (5'9")
- Dinosaur: Cryolophosaurus
Seth, after graduating from college, was hired by Dr. Ancient and Dr. Cretacia to aid them in their quest to save the dinosaurs. Due to his love for dinosaurs, he quickly agreed.