Right you are:

You were a Terran Marine, going by the name "Never". It was your job to ensure the continued operation of Daedalus Station, and to this end you were equipped with a CMC-300 Powered Combat Suit and fully loaded C-14 Impaler gauss rifle.

Of course, you have recently been infected by Zerg parasites due to the intervention of a Zerg Queen while you were effecting repairs outside the station. It used to puzzle you how Zerg could survive in deep space like that. But now you understand. You are the future. You are Zerg. You win with the Swarm, when all aboard the station have either joined you or died. And the nuclear strike the Dominion will inevitably follow such a result with? You no longer concern yourself with such trivialities. The Overlords and Overseers will have considered such things, and if not them, then the Queen of Blades. You are but a single digit in an impossibly vast organism. Whatever happens, the Swarm shall prevail.

You also have the following abilities:

Burrow: You burrow into the Station's infrastructure, hiding safely out of the Terrans' reach. You cannot be targeted by Night Actions for the duration of the Night. This counts as your Night Action.
Detonate: You fill your body with volatile gases and acids. When you detonate, you will assuredly destroy your target. However, the attack will also cost your life, but that is a small price to pay for the glory of the Queen of Blades. This attack cannot be countered in any way. It also counts as your Night Action.
Infest: You inject Zerg parasites into your victim in order to assimilate them into the Swarm. Only one Infested Terran may attempt this on any given Night, and this counts as a Night Action.
Stimpack: Injections of this potent drug mixture will greatly heighten your perception and reflexes for a significant period of time, allowing you to repel any attacks for the duration of the Night. This counts as your Night Action, and you must decide whether to protect yourself or the Medic. Side effects, including insomnia, weight loss, tremors, grand mal seizures, mania/hypomania, paranoiac hallucinations, severe internal hemorrhaging and cerebral deterioration have all been declared nominal and well within the Dominion's acceptable safety margins. Of course, those no longer really affect you, thanks to the Zerg's mutations. In fact, you no longer need this ability now. This is only for your once brethren to worry about.