Transformers: Dark of the Moon - Robo Power - Optimus Prime Cyber Helmet Hear Optimus Prime turn from vehicle to robot and back again! In his real movie voice, hear the most revered leader of the Autobots issue his famous battle phrases like Let s roll out! and Autobots, transform! Cyber Helmet features a voice changer and battle phrases in the authentic movie voice of the revered bot leader! Your Cyber Helmet features 3 different modes and a voice changer for an experience so real, you ll feel like you ve joined him in battle! Choose from three modes featuring the real movie voice of Optimus Prime.