Tetheus

The Black Dragon Officer and in charge of security and of overseeing the Dragon Fighters and Knights, Tetheus does a commendable job to protect the Dragon Castle from harm. Brother to Shydeman and Shyrendora, meaning that he is a demon, he was rescued by Lykouleon and vowed to serve him. Dark, mysterious and incredibly strong, not much is known about his past or, in reality, his present. Tetheus isn't as harsh as he sometimes comes off, however, and while he can be very strict, is also protective to a fault, loyal, and with the uncanny ability to see far more than he reveals. (Source: Wikipedia)