Once bested and killed in a wrestling match by Hercules, Eryx moved on to spend eternity in Hades. Eryx heard and granted the wish Damara Sinclair's mother made while Damara was just an infant.
In exchange for the pheromone-powers and good looks Damara has now, she would marry him on her 17th birthday. Eryx came to wed Damara during her first outing with her new team, the Relative Heroes. Luckily for Damara, she was able to use the wording of her contract to avoid marrying Eryx. The contract stated they would spend their eternal lives together. Since Eryx was dead, he'd already had an eternal life and couldn't make Damara join him past his life. Eryx left Damara for now but gave the group a parting gift - new costumes.