Sigma.

About Sigma

Sigma is the alias of Siebren de Kuiper, a character who first appeared in a 2019 update for the video game Overwatch, a Blizzard Entertainment–developed first-person hero shooter, and the resulting franchise. Designed by artist Qiu Fang, he was introduced in a 2019 update for the title. An extremely tall Dutch man, Sigma is an astrophysicist who suffered psychological damage due to an experiment with a black hole, but as a result gained the ability to manipulate gravity. He was later discovered and recruited by the terrorist group Talon, though is unaware that they are manipulating him to their own ends.