The son of the former Hero Queen, Logan was supposed to do great things. While not a Hero himself, he showed promise when he first took the throne. That promise quickly died, and he became a tyrant, reigning Albion with an iron fist. He has his reasons, but those reasons aren't something he's revealing to anyone.
His sister, a Hero like her mother, staged a coup along with Sir Walter. They fought fiercely and Logan surrendered without fighting his sister. He's currently being held prisoner in his own castle, but his sister hasn't been crowned Queen yet.