Halo Universe
From Halopedia, the Halo wiki
Gordon Freeman, Ph.D., is the fictitious silent protagonist of the Half-Life series of first-person shooter computer games. He is a theoretical physicist who is forced to defend himself and his fellow beings against hostile aliens and other enemies following an experiment gone wrong. In the process, he becomes an almost-mythical resistance hero, eventually becoming one of the leaders of an uprising against alien invaders.
