[@Lmpkio] Correct. [i]Doom 3[/i] effectively retconned the first two games, then [i]DOOM[/i] retconned that. But I think we all agree that the Doom Slayer is the most badass one yet.

[i]Doom 64's[/i] protagonist may also be a different one, and [i]Brutal Doom's[/i] one, who probably isn't canon.