Ares is called "The God Of War", he is the son of Zeus and Hera and half-brother of Hercules. Ares believes that everything should center around him. Ares wants nothing but bloodshed, but over time Ares has learned to value tactics, politics and strategy.
Ares often has conflict with Hercules, his lifelong enemy, or Xena, his lifelong infactuation. Rumors have been spreading that Xena, the Warrior Princess, and Ares are blood related, but so far these rumors are just rumors.
Ares keeps finding himself at the mercy of the god he serves and will slip into the background to rebuild his power to strike back later, when they least suspect it.