Reason, because 47 is an hero. & he kills any bad guys that’s a bad guys group or a antagonistic faction.
Like on Ort-Meyer, he made 47 kill his fathers & trying to kill his son.
On Silent Assassin, Sergei wants to kill 47, because 47 is a hero, & 47 killed Sergei’s brother.
On Contracts, Albert almost killed 47, because the Franchise hired him to kill 47, but failed.
On Blood Money, Mr. Wheelchair guy tells a story about 47, Ort-Meier files, the fall of ICA, & the White House attack. & almost attempting to kill 47, after 47 got resurrected by Diana.
On Absolution, Blake Dexter wants to kill 47, because he wants to kill 47, the legend, kill the hero, & kidnap Victoria. & Benjamin Travis, for making 47 almost kill Diana & hunting him down.
On Hitman (2016), Lucas Grey, he’s known as Shadow Clint, or guy in black clothes. He’s the main villain in season 1, because I think he told every company about Providence. Like in the end of “The secrets of Global Elite” cutscene, he texted the M16 agent about hiring the ICA in a Paris Mission. Then he told the Ether Shareholder about a Scientist who made an Evil Virus. & I think he told everyone about providence. On a Gilded Cage. Providence are evil, because they wanna make Morocco into a communist country, but failed.
Claus Hugo Strandberg did is stoled all the people’s money & turn into a criminal. Reza Zaydan, because he helped & free Claus out of jail & goes into hiding. On Club 27, the Highmores hired the ICA to kill Jordan & Ken Morgan, a providence member. After killing them. The shadow client got a chance to kill Thomas Cross. Diana & 47 found out that they’re being manipulated by the shadow client. Later, Erich Soders gets involved of 47 killing providence members. So, he contact the ICA to make 47 killing 4 terrorists & going to the storm room to see his true colors. After that, 47 & Diana gets mad to found out that Erich Betrayed the ICA, so he could be the Providence member. After that, the shadow client watches 47 through the scope & tells a story to Olivia Hall. & on Japan, Diana becomes the client & wants 47 to kill Erich, because he betrayed the ICA, & Yuki Yamazaki, because she’s protecting Erich. At the end of Season 1, A Providence members tells Diana not to kill anymore Providence anymore, because it’s making them weak. & ask her to work together, but she refuses. & he makes an offer, showing the picture of 47 as a kid. Which it reveals that The constant has been spying on 47 for 20 years. & on Season 2, providence hired the ICA, to kill private militia members. & 47 found Lucas Grey, who’s the shadow client, but he tries to tell him that providence is evil, & was convinced 47 to work together to kill Janus, a man who erased 47 memories of his. & killed Janus for revenge & frame his as the shadow client. & capture the constant, because to learn more about the partners. But too late, The constant is Arthur Edwards, a man who escaped. & on the final season, he wants 47 bad, because to stop a hero. & on the canon ending putting a syringe on him. Arthur cannot remember who he is. & 47 is back! & they become Freelancers. Diana becomes 47’s boss.