Underworld

This article is about Cybertron's subterranean levels. For the comic issue, see Underworld!.

The Underworld is a nasty part of Cybertron from the Generation 1 continuity family.

Cybertron's lower levels are generally uninhabited. The levels immediately below Cybertron's disused sewer system are known as Underworld, home to all sorts of horrible things.

It was once traditional for Autobots to undergo a "trial by fire" in the Underworld, but that tradition ended around the time the Ark was launched, 4 million years ago.

Fiction

Marvel Comics UK

The headstrong Autobot Military Academy cadet Flattop convinced Subsea and Tailgate to join him for a "trial by fire" through Underworld. They were attacked by a psychotic gang of heavily-modified Transformers called the Mutants that made their home there. Flattop and Subsea were killed, but Tailgate destroyed the Mutants and escaped, having succeeded in his trial by fire after all. Underworld!

The Demons passed through the Underworld layer before reaching the surface of Cybertron.

War For Cybertron

In the old days, after being birthed from the Well of All Sparks, the newly sparked Cybertronian was expected to make a death-defying run through Underworld as a test of courage and worthiness. As this custom died away, Cybertronians turned to another sport full of thrills and spilled oil:gladiatorial combat. This was the first place many disenchanted Cybertronians caught their first glimpse of a fellow named Megatron (G1). Exodus: The Official History of the War for Cybertron