Barret Lawrence

Lawrence Barrett appears to be one of the game's antagonist in Deus Ex: Human Revolution.

A member of the Tyrants, a black ops team made up of multi-national members who work for a mysterious conglomerant of the world's most powerful and wealthy members, Barrett features various augmentations.
He's the leader of the mercenaries of the private military company Belltower Associates deployed in Heng Sha and a member of the augmented black-ops team who attacked the Sarif Industries research labs. He has a three-barrel minigun concealed in his left arm and he is heavily mechanical-augmented. His augmentations are made by Tai Yong Medical.

Lawrence Barret acquired the scar to his left eye after fighting Ben Saxon in the novel Deus Ex: Icarus Effect. The fight took place en route to the Gulf of Saint Lawrence in the North Atlantic.

Deus Ex wikia