Production details
First appearance Transformers: Exodus

  HYDRAU! HYDRAU! HYDRAU! went the chant among the crowds. An illegal gladiator who battled in the hidden gladiatorial arena beneath Iacon itself, Hydrau was a creaking cast-off of some industrial enterprise. He wore his own name painted across the backs of his shoulders.


Transformers: ExodusEdit

The crowds chanted his name when Megatron revealed to Orion Pax the violent, illegal sport festering in the heart of Iacon.

He won a match against a numberless horde of Minicons. Sadly, his combat partner was not so lucky, dying in the match. As the crowd celebrated, Megatron commented, with a smile, that he might have found some competition. Orion did not believe it for a moment.