The FPS that helped re-define the genre, Doom (1993) lets players assume the role of a space marine, the “Doomguy”, and fight your way through hordes of invading demons from hell. With heavy D&D influences and references (for instance the beholder-like cacodemon), Doom features all manner of monsters, the least of which is the standard rifle-sporting zombieman, a possessed undead soldier. With a bit of a technological twist, and the supplemental options from the Dungeon Masters Guide, zombiemen can be added to your table.

Zombieman
Medium undead fiend (demon), chaotic evil
Armor Class 15 (combat armor)
Hit Points 60 (8d8 + 24)
Speed 20 ft.
STR 13 (+1)
DEX 9 (-1)
CON 16 (+3)
INT 8 (-1)
WIS 8 (-1)
CHA 4 (-3)
Saving Throw Wis +0
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive Perception 10
Languages —
Challenge 6 (2,300 XP)
Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5+the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.
ACTIONS
Rifle (automatic). Ranged Weapon Attack: +1 to hit, range 80/240 ft., one target. Hit: 9 (2d8) piercing damage.
Rifle (burst). The zombie fires a burst of bullets from its rifle. Each creature in a 10-foot radius must make a DC 9 saving throw, taking 9 (2d8) piercing damage on a failed saving throw.
Zombie of the Week is a bi-weekly (first & third Friday of the Month) feature that presents Horror Movie Zombie options, including new Traits, Attacks and Lore to add to your 5th Edition zombies. Each option comes with a recommended Challenge which denotes the suggested modified minimum CR rating for a zombie or undead that may be best suited for that particular option. DM discretion advised…