Doom 3 cheat codes

Instructions
All Doom 3 cheat codes are activated by typing them into the console. The console can be opened by pressing the Ctrl, Alt and Tilde1 keys simultaneously.
 * 1) The key above Tab typically marked with ~ or ½ and/or §.

Spawning NPCs
When your spawning enemies you type spawn monster_ _.

Zombies

 * zombie_maint_bald (Bald Maintenance Zombie)
 * zombie_maint_nojaw (Maintenance Zombie with no jaw)
 * zombie_maint_skinny (Skinny Maintenance Zombie)
 * zombie_maint_wrench (Maintenance Zombie with no jaw and with a wrench)
 * zombie_maint_flashlight (Maintenance Zombie with no jaw and with a flashlight)
 * zombie_labcoat_skinny (Skinny Scientist Zombie)
 * zombie_labcoat_neckstump (Scientist Zombie with no head)
 * zombie_labcoat_limb (Scientist Zombie with a bloody mouth)
 * zombie_labcoat_pipe (Scientist Zombie with no face)
 * zombie_suit_skinny (Skinny Civilian Zombie)
 * zombie_suit_bloodymouth (Civilian Zombie with a bloody mouth)
 * zombie_suit_neckstump (Civilian Zombie with no head)
 * zombie_tshirt_bald (Bald Marine Zombie)
 * zombie_tshirt_blown (Marine Zombie with no face)
 * zombie_maint (Very skinny opened green shirt zombie)
 * zombie_maint2 (Very skinny zombie with a black body) [Buggy]
 * zombie_fat (Fat Zombie)
 * zombie_fat2 (Fat Zombie with gore)
 * zombie_fat_wrench (Fat Zombie with gore and a wrench)
 * zombie_bernie (Flaming Zombie)
 * zombie_sawyer (Chainsaw Zombie)
 * zsec_pistol (Pistol Z-Sec)
 * zsec_shotgun (Shotgun Z-Sec)
 * zsec_machinegun (Machine Gun Z-Sec)
 * zsec_shield (Shield Z-Sec)
 * zombie_commando (Commando Zombie)
 * zombie_commando_cgun (Commando Zombie with a chaingun)
 * zombie_morgue (Very fast half-naked Zombie)
 * zombie_boney (Hell Zombie)

Demons

 * demon_imp (Imp)
 * demon_imp_crawler (Crawling Imp)
 * demon_maggot (Maggot)
 * demon_wraith (Wraith)
 * flying_lostsoul (Lost Soul)
 * demon_pinky (Pinky Demon)
 * demon_trite (Trite)
 * demon_tick (Tick)
 * flying_cacodemon (Cacodemon)
 * demon_revenant (Revenant)
 * demon_cherub (Cherub)
 * demon_mancubus (Mancubus)
 * demon_archvile (Arch-Vile)
 * demon_hellknight (Hell Knight)

Bosses

 * boss_vagary (Vagary)
 * boss_guardian (Guardian)
 * boss_guardian_seeker (Seeker)
 * ''boss_sabaoth (Sabaoth)
 * boss_cyberdemon (Cyberdemon)

Resurrection of Evil

 * flying_forgotten (Forgotten One)
 * demon_vulgar (Vulgar)