Transformers One Robot Battlers Optimus Prime vs Megatron Action FiguresExperience the epic origins of legendary Transformers robots with this Transformers One Battling Robots action figure 2 pack that includes the Optimus Prime figure and the Megatron action figure. Place the action figures on the Battle Base and slide the finger slots for cool action moves. Knock a figure off the base to win. The 4. 5 inch (11. 5 cm) articulated Optimus Prime figure converts between robot toy and semi truck toy in 3 steps. The 4. 5 inch