Transformers - Robots In Disguise Mega Optimus Prime. The leader of the Autobots is back, and he"s fiercer than ever! This Optimus Prime changer still fights the Decepticons every time he can, but he converts so fast they"ll never be able to keep up. Convert him from mighty robot mode to semi truck mode in just 3 steps, then convert him back again when the battle calls for it! You can unlock Mega Optimus Prime character in the Transformers Robots in Disguise app by scanning your figure"s badge into the app. (Device not included.) Decepticons will never be able to handle your fast-changing Mega Optimus Prime figure! Style And Colour May Vary. For ages 6+