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Gibbering Mouther

Medium · Aberration · CR 2 · Chaotic Neutral

Source. 5e 2024 Rules

9 (natural armor)

52 (7d8 + 21)

Ability Scores

Core attributes and their modifiers.

STR

DEX

-1

CON

INT

-4

WIS

CHA

-2

Overview

Category Monsters

Size Medium

Type Aberration

Alignment Chaotic Neutral

XP 450

Initiative Bonus -1

Movement

Walk 20 ft (6.1 m)

Swim 20 ft (6.1 m)

Climb 10 ft (3 m)

Crawl 10 ft (3 m)

Senses

Darkvision 60 ft (18.3 m)

Passive Perception 10

Saving Throws

Strength +0 Dexterity -1 Constitution +3 Intelligence -4 Wisdom +0 Charisma -2

Traits

Aberrant Ground

The ground in a 10-foot Emanation originating from the mouther is Difficult Terrain.

Gibbering

The mouther babbles incoherently while it doesn't have the Incapacitated condition. Wisdom Saving Throw: DC 10, any creature that starts its turn within 20 feet of the mouther while it is babbling. Failure: The target rolls 1d8 to determine what it does during the current turn:

1-4: The target does nothing.
5-6: The target takes no action or Bonus Action and uses all its movement to move in a random direction.
7-8: The target makes a melee attack against a randomly determined creature within its reach or does nothing if it can't make such an attack.

Actions

Bite

Cost 1

+2 to hit, reach 5 ft (1.5 m). Hit: 2d6 piercing damage.

Melee Attack Roll: +2, reach 5 ft. 7 (2d6) Piercing damage. If the target is a Medium or smaller creature, it has the Prone condition. The target dies if it is reduced to 0 Hit Points by this attack. Its body is then absorbed into the mouther, leaving only equipment behind.

Blinding Spittle

Recharge 5–6 Cost 1

Dexterity Saving Throw: DC 10, each creature in a 10-foot-radius Sphere [Area of Effect]|XPHB|Sphere centered on a point within 30 feet. Failure: 7 (2d6) Radiant damage, and the target has the Blinded condition until the end of the mouther's next turn.

About Gibbering Mouther

Gibbering Mouther is a medium aberration with a Challenge Rating of 2. It has a chaotic neutral alignment.

In combat, this creature maintains an Armor Class of 9 and possesses 52 hit points (derived from 7d8 + 21).

GM Tips: Using Gibbering Mouther

1 tips available

When using Gibbering Mouther in your D&D 5e campaign, consider these tactical approaches:

Aquatic Combat: This creature can swim at 20 ft. It has advantage in water environments. Consider fighting on land or using water-based spells against it.

Player Guide: Facing Gibbering Mouther

1 strategies available

When your party encounters this creature, keep these strategies in mind:

Aquatic Combat Defense: This creature can swim at 20 ft! It has advantage in water. Fight on land if possible. Use 'Control Water' or drain water sources to limit its mobility.

Encounter Building Calculator

Standard Party Encounter (4-5 characters):

This creature is a medium encounter for a party of 4 characters of level 2.

Solo Encounter:

A single character of level 4 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 600 XP
Hard: 900 XP
Deadly: 1,200 XP

Based on D&D 5e Dungeon Master's Guide encounter building guidelines. CR roughly equals party level for medium encounters.

Frequently Asked Questions

What is the challenge rating of Gibbering Mouther?: Gibbering Mouther has a Challenge Rating of 2, making it appropriate for parties of level 2.0.
What type of creature is Gibbering Mouther?: Gibbering Mouther is a Medium Aberration, which affects how certain spells and abilities interact with it.