Flatus is the uncle of Iolaus and brother of Erythia; a great hunter, he forsook all ideas of marriage and fatherhood in favor of hunting. As a result he unfortunately had terrible hygiene and etiquette.
When Iolaus crossed the goddess Artemis, she transformed him into a deer, and he was hunted by Flatus; despite Hercules and Jason trying to stop him, Flatus shot Iolaus with an arrow and was about to kill him when they revealed the truth to him. Guilt-stricken and mortified, Flatus did his best to heal Iolaus, but it ended up taking the powers of Helene the Golden Hind to save his life. Flatus, upon seeing the beauty of the Golden Hind, seemed to be a changed man afterward.