A brainwashed soldier-experiment by a corp. Memory-wiped and mentally programmed towards loyalty, Karma is generally a cheerful and charismatic person to be around, if more than a little twitchy at times -- the conditioning must be renewed and comes with neurological tics and other side effects.
He's gotten away from his parent corp for a long time, however -- his memories have begun to return.
(The campaign is utterly ridiculous, don't be fooled)