Monkeystone. Monkeystone is a heroic Maximal who serves Optimus Primal. His beast mode is a stone statue of a running Spider Monkey with his back arched in mid-flight. Monkeystone in beast mode. Retrieved from "https://beastwarstransformers.fandom.com/wiki/Monkeystone?oldid=43618" Categories: Maximals Beast Warriors Beast Wars E.N.D.A.N.G.E.R.E.D. Maximals Monkeys Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.