Sentinel Prime is a very patriotic individual, believing that all Cybertronians are Gods. He is a member of the Dynasty of Primes. He was Optimus Prime's mentor, who taught him everything he knew. Before he left Cybertron in the Ark, he handed leadership of the Autobots to Optimus Prime. He was famous for being a proud and feared warrior on the battle fields of Cybertron, using a double-bladed Primax Blade and a shield-changeable Cosmic Rust Gun with great skillfulness. He was also the true leader of the Autobots (before Optimus).