Gather your favorite characters from the world of Transformers with the Transformers Legacy United Core Class Infernac Universe Bouldercrash action figure! This 3.5-inch action figure is an Armorizer, a creature made of living rocks and metals from other planets! Combine this Armorizer figure with other Transformers figures to create impressive armor of rocks and weapons. The figure also transforms from a rock creature to a motorcycle in 10 steps. Get ready for battle with the provided stone knife accessory. Celebrate 40 years of Transformers history with the Transformers Legacy action figures series.