Hitman: 10 Craziest Things Agent 47 Has Ever Done
1. Patricide
One can only imagine finding out that the people that raised you aren't your parents can be a massive shock.
So, imagine finding out that you weren't born au naturale, but instead cloned from elements of four war hero/criminals and a gene-tampering scientist... you'd be a bit miffed.
Of course, to then only find this out after your "father", Dr. Ort-Meyer sends you to take them out would inevitably leave you rather angry indeed.
I mean, this is all guesswork. I haven't been cloned... as far as I'm aware.
At the end of Hitman: Codename 47, this massive twist comes full circle when 47 returns to the asylum/lab he was born in. After taking on a host of his own "brothers", 47 confronts the man that made him, who wanted the competition eliminated for fear of being bested.
Of course, the always-composed 47 wants none of even, and despite his "father's" remorse, snaps the dying man's neck.
It was such a massive twist set very early in what would be a successful franchise. That it still gets used as several plotlines shows just how strong the reveal was.