Transformers Prime, Season 1B

For centuries across the universe, the Autobots have battled their greatest foes, the Decepticons. But on earth, they face a new threat – discovery by the human race. By using their ability to disguise themselves, the Autobots have managed to avoid detection. But now they require the assistance of their human friends to not only help keep their secret, but also to defeat the sinister Decepticons once and for all!