Herbert is a 70 ft long dragon, standing at 30 ft high when standing on his hind legs. He sports pastel green scales with dark round spots around his body, a pastel yellow underbelly, red spines, small red wings, and red hair on top of his head, two soft ears, two thin eyebrows, white eyes and black pupils, four fingers on each hand, human-like arms, three claws on each foot, and a tuft of fur on the tip of his tail. He wears a cyan bandana around his neck.