Transformers: Generation 1 - The Dweller in the Depths - S03 E18 - 1986

The Dweller in the Depths | Transformers: Generation 1 | Season 3 | E18 |

The Autobots have a problem on Cybertron, where the Decepticons have released an ancient horror from their home planet's distant past. This ancient horror is the Dweller, a monstrous beast that drains the energy from its victims, which results in converting its victims into energy vampires. But can the Autobots stop this beast before it drains Cybertron completely dry?