Beast Wars Episode 6

Feral Scream, Part 2:
After returning to base, Cheetor has nightmares and soon transforms into the beast from the previous episode. The other Maximals begin to hunt the creature, unaware that it is Cheetor. Megatron claims ownership of the new Transmetal II Cheetor, and sends Dinobot II to capture him. Cheetor eventually harnesses his new form.