Armorhippopotamus. Armorhippopotamus is a heroic Maximal knight serving Optimus Primal. His beast mode is a yawning and rearing Hippopotamus in armor with the Maximal insignia in his chestplate. Armorhippopotamus in beast mode. Retrieved from "https://beastwarstransformers.fandom.com/wiki/Armorhippopotamus?oldid=42683" Categories: Maximals Beast Warriors Beast Wars E.N.D.A.N.G.E.R.E.D. Maximals Hippopotamus Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.