Alexander Carter was a normal man that lived a normal life. That is until he was hit and killed by a drunk driver. Now dead he is offered a chance by a powerful being to be a part of something much that he thought only existed in fiction. Mass Effect SI story with the MC starting out in DOOM 2016. Rating should be for obvious reasons. Pairings have been decided.

All life on Earth had been consumed by Blacklight. With no Biomass to feed on, Blacklight had to evolve, adapt, and grow. Now a collective Council of Aliens discovers the existence of such a life form. How do the aliens see a form of life that is viral, how they deal with it, what are the consequences to the galaxy of such a race existing at all.

Hell no longer could Deal with the Doomslayer. He was too much. They also feared killing him as to be trapped with his soul. So they sent him away. A drift in the stars for hundreds of years till eventually he was discovered by Infinity.