'Heracles'

'Heracles' - real name Herman D'Elana - was a fighter in the Arena when he was by trained a past form of Victoria. When Victoria returned after a rejuvenation - younger and with a new name, he recognised the techniques and figured out her secret. He took on a pseudo-mentorship role despite becoming more reliant on alcohol to help him sleep. He is protective of Victoria and pretended to be her when the Synergy Group investigated the Arena, taking her place until he was released some time later.