Mancubus

Mancubi are enormously bloated, cumbersome but tough demons that look somewhat like extremely overweight humans. They do have some distinct demon features though - all green eyes, deformed feet, pointy teeth and three pairs of nipples. [1] In addition their arms have been replaced by huge, rapid-firing fireball cannons powered by a generator strapped onto their backs. The game manual describes the Mancubus as follows:

The only good thing about fatso is that he's a nice wide target. Good thing, because it takes a lot of hits to puncture him. He pumps out fireballs like there was no tomorrow.

The plural of Mancubus is "Mancubi" rather than "Mancubuses": this is according to John Romero, who was asked as to the correct plural form. This follows from the latin pluralisation of the word, as "mancubus" comes from "succubus", plural "succubi".

Tactical analysis

Mancubi are dangerous opponents, but have a number of exploitable weaknesses. They are slow, and make large targets, so are easy to kill with rapid-fire weapons. Furthermore, because they pause briefly before attacking, and also give out their distinctive battle cry before firing, it is pretty easy to prevent them from attacking using slower weapons, even the super shotgun. When they do attack, it is helpful to attempt to keep one's distance. Otherwise, the player might take two fireballs instead of just one. When dodging from a greater distance, it is important to avoid overdodging. With the first two attacks from the Mancubus, one fireball will go straight toward the player while the other two will fly off to the left or right. In the third volley, one will go left and one right. This pattern can be figured out and used to avoid Mancubus attacks.

Once a Mancubus has begun to attack its target, it continues to fire (if it remains unhurt while firing) until all six projectiles have been discharged, even if the target has moved out of its sight. This can be used to cause monster infighting with the jack in the box technique.

Data

Attributes
ID #	67 (decimal), 43 (hex)
Hit points	600
Speed	8 map units/frame (70.0 map units/second)
Width	96
Height	64
Reaction time	8
Pain chance	80 (31.25%)
Mass	1000
Bits	4194310

Bits list
1: Obstacle 2: Shootable 22: Affects Kill %

Sprites & sounds
Sprite name	FATT
Alert sound	DSMANSIT
Action sound	DSPOSACT
Pain sound	DSMNPAIN
Death sound	DSMANDTH

Ranged attack
Type	Projectile
Speed	20 map units/tic (700 map units/second)
Damage	8-64 (per fireball) 48-384 (total)
Width	6
Height	8
Sprite name	MANF (in flight) BEXP (impact)
Sound	DSMANATK (loading) DSFIRSHT (firing) DSFIRXPL (impact)

Damage done by a full fireball volley

Appearance statistics

The IWADs contain the following numbers of Mancubi:

Game	ITYTD and HNTR	HMP	UV and NM
Doom II	15	36	66
TNT: Evilution	21	53	84
Plutonia	92	113	140

Other games

Doom 64

While their function is unchanged, their appearance is greatly altered. They have less fat and a more bear-like face, are taller and wear a metal body harness.

Doom RPG

In Doom RPG, the Mancubus appears as a class of monster. There are three variations, identified by color:

Behemoth (blue with red eyes)
Mancubus (normal colors)
Druj (red)

This class of monster is weak against rockets.