Protagonist

The protagonist is the main character in a story. In a game, it is the player's character.

Doom

 * Doom's protagonist is left nameless in all installments of the core Doom franchise. In Doom 3, the main campaign, Resurrection of Evil, and The Lost Mission as well at the 2016 Doom and Doom Eternal all feature separate protagonists; whereas it is implied the same marine went through Ultimate Doom, Doom II, and Final Doom.

Several mods give an identity to the player character. A few notable examples:
 * Icarus: Alien Vanguard and Daedalus: Alien Defense: Dave Razor, Space Marine, named by.
 * Mordeth: Norman Ash, who got trapped in Hell after severing the invasion portal from the wrong side.

Heretic

 * Corvus is the name of the player character given in ; who is said to be the vanquisher of D'Sparil.

Hexen

 * Baratus the fighter, Daedolon the mage, and Parias the cleric are the available characters.

Strife

 * Strifeguy is said to be a mercenary.

Other games

 * Chex Quest's protagonist is named Fred Chexter and often referred to as the Chex Warrior.
 * Hacx features Danny Evanger, a hacker and ex-convict.
 * Harmony is named after the player's character.