|“||You have the entitlement and narcissism typical of your generation. In that, you are a profound success.||”|
The Dread Doctors came to Beacon Hills and into Theo's life when he was still an eight or nine-year old boy. They seemingly noticed that he possessed traits of those of a psychopath and chose him as their first candidate in their experiments. According to Theo, the Dread Doctors tricked him into killing his sister Tara Raeken to obtain her heart, which he did by either pushing his sister off the bridge in the woods or allowing her to die from hypothermia as a result of exposure to cold water. Tara's heart was kept viable through the cold weather and the Doctors transplanted it into Theo's chest to turn him into the very first pseudo-supernatural genetic Chimera, specifically a Werewolf-Werecoyote hybrid with the powers and abilities of both species, including the rare ability to shapeshift into a true wolf. However, the Doctors only came really close with this experiment and Theo was not considered a good host for the Werewolf The Beast of Gevaudan, much to their disappointment. Despite this, the Doctors allowed Theo to live and he became their henchman for the following years, navigating through his new supernatural world and learning how to control his newly-gained powers, as they searched for more potential hosts for the Beast.
Theo was not pleased over being considered a "cheap knock-off" of real shapeshifters, such as true Werewolves and Werecoyotes. Around the year of 2012, he learned that his classmate back in the fourth grade Scott McCall was turned a Werewolf and had ascended to the rare rank of True Alpha, as well as that he was the leader of a unique pack composed of Werewolves, a Werecoyote, a Kitsune, a Banshee and humans, all of its members dedicated to protect their town from supernatural threats. Desiring to become a real Werewolf and the Alpha of a pack, Theo proposed a deal with his masters: he would help them create more Chimeras to find a suitable vessel for the Beast and keep Scott and his pack away from their plans if they helped him steal Scott's Alpha powers and his pack from him; the Doctors seemed to agree to this deal and Theo returned to Beacon Hills alongside the Dread Doctors to put his plan into motion.
Throughout Teen Wolf Edit