Mitsuo Kobayashi was born into the royal family of the Yumizara Empire, and was slated to be next in line to take the throne as emperor. However, his brother Tomitoka decided to usurp the throne by making a deal with the Demon Lord Bako. Fleeing with his infant son Kenji, Mitsuo escaped from Tomitoka and Bako's plan. Twenty years later, Mitsuo, Kenji, and the Stone Dragon Clan are seeking a way to defeat Bako and gain their rightful place on the throne. A brilliant tactician and strategist, Mitsuo knows how to handle himself and his army in battle.

Kenji is Mitsuo's son. He was born mere weeks before his uncle Tomitoka stole the throne and attempted to have him and his father assassinated. He has been fighting against Bako and Tomitoka all his life. As such, he is a very skilled warrior in all forms of combat, and has much of the tactical mind of his father. His skill is tempered by his youth, though. As he grows and learns, he will become a great leader in his own right.

Xander de la Vega is an all around Renaissance Man. He is a scientist, inventor, tinkerer, prodigy and mechanical genius. He prefers to think his way out of situations, though is willing to use muscle sometimes to get things done. Often, he'll have some strange invention that he's working on that will need a part that requires him and his partner Serena to do things that aren't quite legal. Xander says that it's all for the greater good of society, though, as he firmly believes that his inventions will help humanity.

At 19, he became the youngest ever court scientist for Lord Raphael. One of his experiments exploded in the Lord's face, however, and destroyed Raphael's left eye. He escaped his own execution and since then, he's been on the run from Raphael and his minions. Now 25, he is far more intelligent than his age would show and he frequently uses that misconception to his advantage

Serena Garabond is a thief, a rogue, and a pretty good sorceress too. After her parents were killed by Lord Raphael when she was thirteen, she became a street urchin, picking pockets on the street to get by. She met Xander when she tried to steal one of his creations (he called it a mechanical bread toasterator). They realized that they had a lot in common (mostly their dislike for Lord Raphael) and decided to work together. Over the years, their friendship has developed into something stronger. Now 22, she has grown to become a very beautiful woman. Her inner fire and passion to survive keep her alive when many others would crumble.

Serena started teaching herself sorcery from Xander's extensive library, and has become quite adept in the magical arts. Many of her spells are tuned towards stealth and thievery, though the occasional offensive spell is necessary.