OT Avengers Mother fucker was Nick's last conscious thought before the demon took over. It had been a small bite to the ankle from some god damn snake thing he hadn't even seen because he was fighting some giant winged bat thing. Just a quick pain and then a searing fire and that moment of revelation before just blackness.
In full possession of his mental faculties, Nick Fury was a scary mother fucker. Possessed by a wicked and homicidal force of evil, Nick was a complete nightmare. His rampage began with a little murder- the team of agents with him shot, one by one, in the head. One made a valiant effort to take him out and had his skull crushed for his trouble. Property destruction was next on Fury's agenda as he started fires with electric pulses from his arm then knocking out power line poles to crush houses and cars.
Innocent humans he encountered were quickly and easily dispatched, and even fellow demons were destroyed if they dared to get in his way. The demonic Fury continued his way through town, leaving a path of carnage in his wake, intent on the army barriers set up around it. He was preparing to make an escape. There was a whole wide world of lives out there just ripe for the taking.