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The Immoral Beast, as seen in the achievement Let My Sheep Go.

"Please... give me more!"

The Immoral Beast is the boss of the 3rd night, Torture Chamber.


It takes the form of a grotesque mishmash of four limbs and presumably buttocks conjoined together, vaguely resembling the shape of a heart. It has two legs and two arms, but moves in a crab-like position on all fours. On its back is a face: eyes, a nose and a mouth. On its front, the eyes can still be seen, but it has another larger mouth with sharp teeth and an elongated and exaggerated tongue.


In a red and gloomy area, Vincent enters the second boss battle. A roar shakes the blocks as Vincent looks down to find a tongue lashing out at him, attached to the Immoral Beast. This begins the final nightmare of the third night. Like with the previous boss, Vincent successfully reaches the top, realizing that the door serves as an exit out of the nightmare. The Immoral Beast climbs up as well but it gets evaporated by the burst stream of light emitted from the open door.


See Torture Chamber 3-3

Boss guide[]

The Immoral Beast has two attacks. When Vincent is standing on the blocks glowing red that are close to the Immoral Beast, it will try to attack him with its tongue. If he doesn't get to higher ground quickly enough, this will kill him instantly (even if Vincent tries to hang behind a block, the tongue will simply pierce right through the block and kill him). Otherwise, it knocks him down (if he's standing on a block), stunning him briefly.

When Vincent is higher up, the Immoral Beast will eject pink hearts from its mouth into the air, which then fall down on the stage. Blocks glow red when they are about to be affected. If Vincent is hit by one, a heart icon appears above his head for a short time; while affected, all of the player's movement controls become reversed for a short time. The layout of the stage is very intentional where the constant overhanging blocks can be used to shelter from the falling hearts. In the event that Vincent gets hit with a heart, they can undo a turn. This attack is not used in Safety and Easy mode of Catherine: Full Body.



The Immoral Beast.

The mishmash of an overtly sexualized creature with a female face (that has Catherine's blue eyes) make it clear this boss represents the affair that Vincent commits the night before with Catherine, as well as Vincent's guilt.

As Vincents remarks about Catherine highly suggest that while he may find her "cute", his attraction to Catherine supposedly controls him in a way that is only hurting them both (as Vincent is already in a relationship). However, as Vincent cannot break away from this "dream girl" that he has come across in a time where his own girlfriend is starting to drive him away, his innocent attraction for Catherine has turned into an ugly, twisted monster.

While specific sexual acts (for example, anal) can be speculated on based on the physical appearance of the boss and Catherine's admission the next morning that "[she has] never done something 'like that' before", it is left up to personal interpretation as to what it really means.

Though there is speculation on the meaning of this boss, it is possible it only signifies the affair itself rather than detailed sexual positions during the affair. As stated by Thomas Mutton later in the game, Catherine is a succubus that invades men's dreams, and the fact Vincent can never remember actually having sex with Catherine puts a question on the physicalness of their relationship. As such, this is the first time Catherine has invaded Vincent's dreams.

Significant plot details end here.



Immoral Beast: (pleasurable moaning)

Vincent: "Uwaaah!! C'mon, man... What is it this time...? S-Seriously, gimme a break... Ugh!"


  • "(giggles) Not yet..."
  • "Please...give me more!"
  • (horse whinny)
  • (giggling laughter)
  • "Come closer..."
  • "Why don't we play?"
  • "Let's have some fun..."
  • "You wanted this?"
  • "(gasp) I can't hold back!"
  • "Yeah!"
  • "Stop moving!"


Immoral Beast: "Uwaaaah!!"

Vincent: "Stay away, dammit!"

Immoral Beast: "I can't get enough!"

Vincent: "St-Stop it!!"

Immoral Beast: "Uwaaaah!?"

Vincent: "J-Just go away, you monster!"


  • In Catherine: Full Body, if the player changes Catherine's Japanese voice, the Immoral Beast's voice will also change to match her respective actress, further cementing the connection between Catherine and the Immoral Beast.



Stages and bosses
Underground Cemetery:

Prison of Despair:
Torture Chamber:
Clock Tower:
Spiral Corridor:
The Cathedral:
The Empireo:
Close Encounter:


2-1  · 2-2  · 2-3 (Fist of Grudge)
3-1  · 3-2  · 3-3 (Immoral Beast)
4-1  · 4-2 (The Child)
5-1  · 5-2  · 5-3 (Doom's Bride)
6-1  · 6-2  · 6-3  · 6-4 (Child with a Chainsaw)
7-1  · 7-2  · 7-3  · 7-4  · 7-5 (Shadow of Vincent)
8-1 (Catherine)
9-1  · 9-2  · 9-3  · 9-4  · 9-5 (Thomas Mutton)  · 9-6 (Dumuzid)
10-1  · 10-2  · 10-3  · 10-4 (Archangel)
Altar  · Menhir  · Obelisk  · Axis Mundi