A king so vile and treacherous was cursed many centuries ago to forever roam the earth. He is now a serf of earths will and shall be anywhere needed to stop the destruction of earths its bueatiful landscapes and creatures.
There is an important pair of fraternal twins. Possibly minor dieties, sorcerers, or maybe just an important pair of nobles. One is evil and one is good. The thing is, the one who looks evil at first glance is the good one, and vice versa.