The Ultimate Doom

"The Ultimate Doom" is a three-part episode in the first season of the original Transformers cartoon series. In it, Megatron pulls Cybertron into Earth's atmosphere, which plays havoc on the ecosystem and causes a slew of natural disasters.

For further information, see:

• "The Ultimate Doom, Part 1"
• "The Ultimate Doom, Part 2"
• "The Ultimate Doom, Part 3"