Matthew Trent

Matthew "Matt" Trent Is the villain protagonist of the Black Mirror episode White Christmas.

He was portrayed by Jon Hamm.

White Christmas
One day, Matt meets Joe Potter who just woke up at a small remote outpost house in the middle of a snowy wilderness on christmas day. Matt asks Joe why he accepted the job at the outpost. Joe doesn't remember and asks Matt the same.

Part 1
tbh

Part 2
Matt Trent's primary job is at a company called Smartelligence, which consists of him informing the "cookie-clones" (small devices that contains an exact digital clone of one person's mind) what their purpose is - that is, to prepare the day for their real selves (such as baking breakfast) through remote control of their home, since they know exactly how they would want it. On the cookies, there is the option to change the time-state of the cookie-clone, making the time for them go slower or faster. However, they can't sleep unlike real humans.

He enslaves a clone of a woman called Greta in a cookie. Appearing in an isolated room with nothing but a control panel, she gets angry because what she paid for was to HAVE a cookie and not become one, Matt explains to her that she is actually not the Greta, just an AI-clone of her real self.

Matt explains that his job is to make the clones accept their state of being and subjects her to three weeks of isolation alone in the matter of a few seconds. After cookie-Greta's three weeks have passed, which for him only took a few seconds, she still refuses to work. Matt then subjects her seven months more of isolation.

Traumatized and mentally tortured, she begs him to give her something to do. Happy to inform her, he gives her the said purpose of cookies: to control the rooms of the house (kitchen, bathroom, living room, etc) through the control panel and do whatever the real Greta asks her to.

Part 3
tbh