Because you like Mrs. Hudson in Sherlock

Dr. Gordon Freeman is a brilliant physicist is a quiet hero. And given all the violent aliens, he better be. See them in Half-Life.

A believer in the pursuit of justice, Garrus Vakarian hates it when bad guys slip through the cracks of the bureaucratic justice system. See them in Mass Effect.

Aiden Pearce is a hacker who knows how dangerous the world can be, both online and off. See them in Watch Dogs.

After becoming accepted into the group of popular girls, Tracy Freeland has turned from a sweet and reserved teenager into a monster. See them in thirteen.

With an A.I. as loyal and witty as Cortana, who needs humans? See them in Halo.

Ben Barber is ready to show you that he's twice the man you think he is. See them in Ride Along.

A super-soldier, Master Chief might be more machine than man. And for humanity's sake, thank God. See them in Halo.