Okay, so The Fucking Fictional Man of All Time has to be fictional. It can be from a TV show, Movie, or in my case a video game. I played tons of games myself and watched tons of movies thus going through looking for The Fucking Fictional Man of All Time. I chose a man who is more bad ass than most real people. My vote goes to the obvious choice, the Doom Marine.
First of all, he's a Marine mother fuckers. Oh Rah! Secondly, he fought his way through hell not once, or twice, but THREE FUCKING TIMES! Kratos from God of War has nothing on the Doom Marine. He took down hell itself and stayed in hell in the ending of Doom 64. Did Kratos stay in hell? No. What a bitch. The Doom Marine is a God among fictional characters. So my vote goes towards him.