Optimus is a fictional character from the Transformers franchise, which includes toys, animated series, and movies. He is known as Optimus Prime, the leader of the Autobots, a group of heroic robots that transform into vehicles. Optimus is characterized by his strong sense of justice, bravery, and commitment to protecting humanity from the evil Decepticons. In the stories, Optimus Prime often transforms into a red and blue semi-truck. His iconic design and leadership qualities have made him a symbol of heroism and sacrifice. The character has appeared in various media, including comic books, video games, and live-action films, gaining a large fan base over the years.