Originally from the back-water systems around Pananan thought to have murdered several cyno pilots for no other reason other than to obtain cadavers for some demented reason.

He disappeared for an extended period of time only to reappear in Annoikis (reasons unknown).
Shortly after he joined the corporation of William Joseph Snow (Molar Research & Reclamations).
Although this is quite a curious move, Marcus remains elusive to the majority and his activities remain in the realms of rumour and gossip in the old systems that he haunts along with the ghosts of his many victims.

Killing….. Murder ….

That’s pretty much the basis on which this guy drew his first experiences in New Eden.