Henshin Transfans! Transformers: Beast Wars: Neo was a Japanese only cel-animated series of the classic Transformers: Beast Wars series. It stars a news set of Maximals and Predacons led by Optimus Prime and Magmatron.
Set in the future after the events of the original The Transformers and the movie. Beast Wars introduces new classes of Transformers known as the Maximals led by Optimus Primal. And the Predacons led by Megatron. They are descendants of the Autobots and Decepticons. After crashing on a new planet they are forced to take animal form as the planet is largely poisonous to their robot form.