15 Video Game Heroes Who Became Villains 

Talion – Shadow of Mordor/War

Talion was also a known defender of the people, whose best intentions unfortunately led him towards the darkness. The proud warrior was ritualistically murdered for Sauron, and the help of the Wraith Celebrimbor is allowed to walk as an undead man, seeking to exact revenge on those who would take everything he held dear. If becoming a revenge driven zombie-swordsman wasn’t quite enough of a bad case of the mondays, towards the end of Shadow of War, Celebrimbor turns on Talion and leaves him for dead. His only hope to survive and put down the wraith that helped him until then, was to take one of the nine rings of power and seal his fate as an eventual Nazgul, bidden to only Sauron.