Tenja is a quick-footed thief hailing from Yakumo, the land of the Beastkin. He fancies himself the “greatest thief of his time”, and makes his love of magic crystals apparent from the start. His sword fighting skills are also on par with that of Leo’s own skills, only that Tenja is much more ferocious with his attack.

Tenja is rarely a team player, preferring to work alone than be hindered by the expectations of others. This "lone wolf" attitude is what caused him to be exiled from his Clan, the "Yohma"; running away from responsibility, especially when he is needed most. Although his mind has been made on partnerships, he joins Leo and company after finding a new purpose.