Metal Gear Rising: Revengeance/Nightmare Fuel

• Jack. The. Ripper. Raiden said this side of himself was a remorseless murderer who didn't give a shit about causing bloodshed and was a demon he fought hard to bury since MGS2. When he decides to let his inner demon out, it was just as pants shittingly terrifying as he claimed. Hell, even Monsoon was horribly creeped out at the change in Raiden, and he's the one who attempted to goad it into happening in the first place.