Zombieman:
--Light: Pistol Scout
-Normal: Rifleman
-Heavy: Rifle Trooper
=
-Normal: Operative
--Heavy: Heavy Gunner
---Normal: Trooper Leader

Imp:
-Light: Sec
-Normal: Heavy Sec
--Heavy: Riot Soldier
=
--Light: Quick Response Squad
---Normal: Prototype Sec

Shotgunner:
-Light: 'Sprayer' SMGer
-Normal: CQB Trooper
--Heavy: 'Guardian' SSG Soldier
=
-Normal: Grenader
---Heavy: Merc Squad

Demon:
--Light: Guard Dog
-Normal: Breserker
--Heavy: 'Maniac' Chainsaw Criminal
=
---Heavy: 'Ex' Heavy Chainsaw Criminal

Spectre:
--Light: Sharpshooter
-Normal: Cloaked Scout
-Heavy: Cloaked 'Sentry' UAC Drone
=
---Heavy: 'Ex' Fully-Equipped Criminal

Chaingunner:
-Light: Advanced Trooper
--Normal: Machinegunner
--Heavy: Minigunner
=
-Normal: Merc
--Heavy: Assualt Minigunner
---Heavy: 'Father' Assualt Shotgun Minigunner

Lost Soul:
-Light: UAC Sentry Robot
--Normal: Jetpack Trooper
--Heavy: Jetpack CQB Trooper
=
---Heavy: UAC Sentry v. 4.1513 Prototype

Revenant:
-Light: Energy Trooper
---Normal: 'Specialist' Multi-Weapon Marine
--Heavy: Prototype Soldier
=
--Light: Railgun Trooper

Hell Knight:
-Light: Exoskeleton Soldier
-Normal: Elite Trooper
--Heavy: 'Enforcer' Autoshotgunner
=
-Normal: Mechanised Exosuit Minigunner
---Heavy: 'Vanguard' Super Soldier

Cacodemon:
-Light: Prototype Jetpack Trooper
--Normal: UAC Sentry Mk3 Plasma-Firing Drone
---Heavy: UAC 'Helljumper' Piloted Mech

Pain Elemental:
--Light: 'Helljumper' Mk2 Piloted Hovering Vehicle
-Normal: UAC 'Carrier' Sentry-Building Robot
---Heavy: UAC 'Reaper' BFG-Armed Prototype Robot

Arachnotron:
-Light: Mechanised Soldier
--Normal: 'Screw' Scoped Machinegunner
--Heavy: UAC Prototype Spider Robot
=
---Heavy: 'Swarmer' Multi-Missled Robot

Mancubus:
--Light: 'Cleanser' Flamer Trooper
--Normal: Demolition Solider
-Heavy: 'Dreadnaught' Assualt Soldier
=
---Normal: BFG Soldier

Arch-Vile:
--Light: 'Neo' Spec-Ops Trooper
---Normal: 'Ranger' Advanced Multi-Weapon Marine
-Heavy: 'Juggernaut' Assualt Minigunner

Baron of Hell:
--Light: Commando
-Normal: Mechanised Exosuit Soldier
---Heavy: UAC 'Specialised Assualt of Hell' Mech

Cyberdemon:
---Light: 'Slayer' Elite Multi-Weapon Marine
-Normal: UAC 'Tank' Mechanised Vehicle
-Heavy: UAC 'Angel of Death' Hovering Assault Vehicle

Spiderdemon:
-Light: UAC 'Blackwidow' Assualt Spider Mech
--Normal: UAC 'Destroyer' Robot
---Heavy: UAC 'Commander' Piloted Mech