Haoku

Haoku Miroku is a were-cheetah from an unknown land in the far east. Not much is known about his life, but he has worked for Cerberus at one point and the Kibellicus Kingdom, might have been hired to protect the castle grounds.

Hiroku was not a villain until he met Maru Kiba and became early rivals. When Maru escaped from his normal life when he was reborn, he travelled to Northern Austria to find his father's kingdom. He met a young cheetah/tiger-like cat demon protecting the gateway into the kingdom. It was not known he was working for Cerberus at this time until Maru was tasked to fight him.

The two became friends initially, but Hiroku's jealousy of Maru's fast growing powers and his place in the kingdom was soon threatened. It was realized that Hiroku wanted the seat of the crown instead of Maru when it was time for Cerberus to step down. Hiroku later left the Kingdom Outskirts to travel and train across the continent, but he would always try to fight Maru when he got his chance.

Later on the series, he becomes a component in Mecha Tanor's plans and becomes a powerful fighter thanks to MT's enhancements.