Gordon Freeman

Gordon Freeman is the main protagonist of the original Half-Life and its remake, Black Mesa, he is a scientist with a Ph.D in theoretical physics, in the game, (Near the very beginning) he is given the HEV (Hazardous Environmental suit) to proceed with the game. His essay for his Ph.D was teleportation through dense elements.

Trivia

 * Ironically, Gordon is the only major character in the game without a third person model, only a pair of floating arms, despite being the main protagonist. An actual model for the character does exist in the games files, which was later found by other modders and made to be of actual use in the game.
 * According to one of the security guards, Gordon used to have a pony-tail. This is a reference to Gordon's Half-Life model, which had a pony-tail.
 * Gordon's locker contains his MIT certificate, beaker, and a picture of a baby on the top shelf, a med-kit, coffee mug, and small box marked "190" on the bottom shelf, and a blue jacket hanging on the side.