Pyro

Pyro was a being made of fire. He was summoned by Hera when her disciple, Zandar, needed a great weapon to use against Hercules. Pyro attacked Hercules in the cellar of Salmoneus' mansion in Orestia. Hercules was able defeat him by capturing him in a barrel and cutting off his supply of oxygen. It was unclear whether Pyro had been killed or whether he could return.

Background

 * Some of the dialogue between Pyro and Hercules hints that Pyro might have been involved in the deaths of Deianeira, Aeson, Klonus and Ilea though we do not see him in "The Wrong Path."