The Reaper (Criminal Minds)

George Foyet or also known as  The Reaper, and  'The Boston Reaper. '''He is one of BAU's best-known enemies, along with others like Mr. Scratch, Cat Adams and the The Replicator. He appears as the main antagonist in the fourth season of Criminal Minds.

Background
Foyet was born in 1968, with a violent father and a fearful mother, he was in constant anger of its father since while his was without can do nothing. Because of this he made him create his opinion abou couples, even to the point of sexism and soon after he grew up and his hatred became his compulsive desire to kill.

Omnivoro
When Shaunessy is close to death, Hotchner and the other members of the vain to investigate The Reaper who returned to kill, he then begins by killing a man and his girlfriend that he stabbed to death and then he kills a couple of old men shooting at them. He then calls Hotch and tries to convince him to make a deal as it was with Shaunessy that Hotch refuses and says he' ll get it, then Foyet goes to the bus and kills several people. In the end he proves himself Foyet as The Reaper when he forges his own suicide with blood and goes behind Roy Colson for him to write his story, BAU goes after him that after many insistence ends up being arrested, he then leaves the jail forging a vomit and blood, and running away.

To Hell and Black, part 2
Foyet returns in the final episode waiting for Hotchner's apartment, he then invades the apartment, he then sneaks in behind Hotchner and sneaks so he should have made the deal and points the gun to, the episode ends with a black screen.

Nameless, Faceless
Foyet appears in this episode, with Hotch in a captive, Foyet torture Hotchm he then says BAU's assumption is incorrect and that he says that the stabbers are impotent and uses knife as a sexual subtitute, he then says that he likes himself mutilate, he is later rescued by BAU and Foyet escapes.

Outfoxed
When Miranda started to kill, Foyet soon gave two envelopes to a known serial killer from BAU Karl Arnold, the envelope itself was telling him he was coming back.

100
Foyet later appears again attacked a United States Marchal, Sam Kassmeyer, he then gets the location of Haley and Jack on Sam's cell phone. Foyet then provokes the Hotch on the cell phone, and kills Haley with a shot leaving Hotch very shaken, Hotch then faces Foyet and ends up having vantage over him, and Foyet dies.