How to draw Optimus prime step by step Optimus Prime is the protagonist of the Transformers universe. He is the leader of the Autobots, a group of Cybertronian robots, and holder of the Matrix of Leadership in almost all its iterations. His greatest enemy is Megatron, leader of the Decepticons, who in most of the series was Optimus's friend on Cybertron. READ IN: 3 John 1:2 Become a member of this channel and earn benefits: / @drawingartshd