History Characters / Doom

* PaletteSwap: Spectre is this for the Pinky, being the same monster but with an InvisibilityCloak. ''Doom 64'' recolors Spectres to yellow, though they're still mostly invisible.

* GlassCannon: They can be taken out with just two Super Shotgun blasts, but those missiles do quite a bit of damage if they hit and their homing qualities make them harder to avoid than other projectiles.

* DamageSpongeBoss: Can take an ''incredible'' amount of punishment in all the games it's in. As the [=GamePro=] parody protip says:

* DamageSpongeBoss: She's the most resistant enemy in classic games with a total of ''5300'' HP.

* AlienBlood: They ''also'' bleed red when shot, but their death sprites clearly have them bleeding ''green''. Though the Barons bleed red in Doom 64.
** In some source ports like PRBoom+ and Crispy Doom, or mods like Smooth Doom, their blood is fixed to be green when you shoot at them.

* AlienBlood: It bleeds red when shot, but its death sprites clearly have it bleeding blue.
** In some source ports like PRBoom+ and Crispy Doom, or mods like Smooth Doom, their blood is fixed to be blue when you shoot at them.

* MookMaker: Can produce an endless array of Lost Souls.

* SpaceMarine: A non-SuperSoldier example. [[spoiler: However, the Super Soldier aspect does get played straight in the modern games after Samur Maykr puts him through the Divinity Machine, turning him into the Doomslayer.]]

* GiantMook: They're one of the biggest and largest demons in the game

* SmarterThanTheyLook: Their ATeamFiring gives the impression that they don't know how to aim properly, but they actually anticipate your moves, making them a pain to dodge if you have no place to cover.

Here's the characters of the classic ''[[Franchise/{{Doom}} Doom]]'' series.

* BaldOfEvil: The Sergeants and Commandos.

* PuzzleBoss: To get at its weak point, you have to ride a rising pillar. Because the vanilla Doom engine has a vertically fixed camera, you have to time your attacks to ''just'' before the pillar reaches the top, with the additional wrinkle that there's a delay between pulling the trigger and the rocket launcher actually firing.

The final boss of Doom 64. A demon with the ability to resurrect other demons much like the Arch-Vile, and making them stronger than before as she does. She single-handedly rebuilds the demon army, forcing the marine to put them down once again.

* GameplayAndStorySegregation: The game's backstory makes her out to be an Arch-Vile on steroids, only needing to pass by a demon to resurrect it [[CameBackStrong stronger than before]], explaining how Hell's forces came back after Doom 2. However ingame she does not have any such reviving ability, and so [[AntiFrustrationFeatures all the demons you have to kill in her arena before fighting her will stay dead.]]

* BadPeopleAbuseAnimals: Likely the developer's initial motivation to include a severed rabbit head on a pike, before MemeticMutation inspired them to retcon it as Doomguy's pet.

* TragicKeepsake: ''VideoGame/QuakeChampions'' mentions that Doomguy carries around Daisy's rabbit foot as a reminder of what he's fighting for, and even in ''Doom Eternal'', he still keeps her empty cage in his Fortress of Doom.

** The Shotgun Guy is also known as Former Human Sergeant or just Sergeant. [[FanNickname Players often call them "Shotgunners".]]

* FanNickname: Occasionally they're collectively referred to as "Hell Nobles".

* AdaptationalWimp: The SS in ''Wolfenstein 3-D'' were pretty nasty, being EliteMooks that dealt a lot of hitscan damage and took just enough in return to be unpleasant to bring down in groups. In ''Doom'', their fire rates, accuracy, and health take a dive, and they are now almost completely ineffectual. They also replace the common Nazi guards, meaning that you now encounter them in numbers that would have been like walking in front of a firing squad in the original--making it all the more obvious when a single super shotgun blast turns a whole squad of them into red jam. For a bonus, the second secret level you encounter them in is almost ''designed'' to result in them infighting with a Cyberdemon, which will usually end in the Cyberdemon killing them all.

* CallASmeerpARabbit: [[LampshadeHanging As the manual points out]], the "imps" in this game don't look much like the "cute little dude in a red suit with a pitchfork" image that word normally brings to mind, being instead brown humanoid monsters covered in spikes and throwing fireballs.

* AdaptationalWimp: The SS in ''Wolfenstein 3D'' were pretty nasty, being EliteMooks that dealt a lot of hitscan damage and took just enough in return to be unpleasant to bring down in groups. In ''Doom'', their fire rates, accuracy, and health take a dive, and they are now almost completely ineffectual. They also replace the common Nazi guards from the original, meaning that you now encounter them in numbers that would have been like walking in front of a firing squad--making it all the more obvious when a single super shotgun blast turns them into red jam. For a bonus, the second secret level you encounter them in is almost ''designed'' to result in them infighting with a Cyberdemon, which will usually end in the Cyberdemon killing them all.

* {{Hitscan}}: They shoot in two-round burst, unlike the other hitscan enemies (A side-effect of having two frames in their firing animation, unlike the Fallen Human they were coded from.)

* CradleOfLoneliness: Averted. Thanks to the positioning and pixellated artstyle, a common misconception is that Doomguy is holding Daisy's head in the endscreen, when it's actually a wooden pike jutting out from the bottom of the viewable screen. The endscreen of "Thy Flesh Consumed" plays this straight, showing Doomguy sorrowfully carrying Daisy's head.

* EasterEgg: Daisy is alive and hidden somewhere in every level of ''DOOM Eternal''. [[spoiler:This is your first hint of the Doom Slayer's true past - he is the Doomguy of the classic series, albeit incredibly pissed and [[ThroughTheEyesOfMadness perhaps seeing Daisy as a hallucination]].]]
* ImpaledWithExtremePrejudice: We can only hope it was after she'd already died...

* TragicKeepsake: ''Quake Champions'' mentions that Doomguy carries around Daisy's rabbit foot as a reminder of what he's fighting for, and even in ''Doom Eternal'', he still keeps her empty cage in his Fortress of Doom.

* OffModel: Each time they attack, they're seen chewing on ripped-off flesh, even if they don't hit anything.

* OffModel: Even though they only launch one missile at a time, both of their launchers will light up when they attack.

* OffModel: The devs cut a lot of corners when porting the SS guards into ''Doom II''. They're visibly smaller than the levels/other characters, they always face the player even when shooting in other directions, and they have a single magenta pixel between their legs that someone forgot to change to transparent.

* VillainDecay: While it's expected that the boss enemies become less unique after their initial appearance, the Spider Mastermind stands out for practically being degraded to ButtMonkey status in ''Doom II''. Every encounter with her has a gimmick that makes her almost effortless to defeat:
** Her first appearance is in Map 6, The Crusher. As the map name suggests, all you have to do is flip a switch to have a DescendingCeiling smash her to bits.

* OneHitKill: While his cubes don't aim at you, if they do hit you get telefragged. This kills you instantly even in God Mode.

* PuzzleBoss: To get at its weak point, you have to ride a rising pillar. Because the vanilla Doom engine has a vertically fixed camera, you have to time your attacks to ''just'' before the pillar reaches the top.

* ThereIsAnother: [[spoiler:The lost levels of ''64'' reveal there there are two of them, and they're sisters.]]

* NoSneakAttacks: Imps have a tendency to helpfully screech and alert you to their presence ''before'' attacking.

* BreakoutVillain: First he was TheDragon to the Spider Mastermind. In subsequent games, he keeps this position with the Icon of Sin, being the last obstacle before him (''Doom II, Plutonia'') or just the FinalBoss (''Doom 3, No Rest for the Living''). Nowadays he's one of the most recognizable elements of the franchise, being put on the front cover of ''Doom II'' and becoming the first boss of ''Doom 2016''.