Grimlock Is Actually Robosen’s First “Dual-Form, Bipedal Walking Robot”

In robot mode, Robosen’s Optimus Prime could walk around using its legs and feet, but in truck mode, it rolled around on a set of six wheels. Grimlock is capable of walking (and turning) using its legs in both its robot and T.rex modes by taking advantage of a six-axis inertial measurement unit (IMU) sensor that helps the robot keep its balance. The robot can actually walk much faster in dinosaur mode as it’s assisted by its tail dragging on the ground which provides extra balance.