With the destruction of Unicron in Transformers: Armada a new age of peace began. But it was not to last. Scorponok and the Terrorcons attack Earth, seeking the newly-discovered power source called Energon in order to revive Unicron. The Decepticons return, their leader Megatron now in control of Unicron's remains and housed inside a powerful new body. Energon is the key to power in the universe and everyone wants it.
The sequel to Armada (called Superlink in Japan) brought with it a mixture of classic cartoon and computer animation that didn't always look all that great. The storylines have also matured a bit, though Energon doesn't have nearly enough story to fill all its episodes. As a series, Energon ranks near the bottom of the pile, but the toys were, for the most part, pretty great. Here they are: