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Critical Role Wiki
Critical Role Wiki

A gelatinous cube is a transparent ooze composed of mindless, gelatinous matter in the shape of a cube.

The average gelatinous cube measures 10 feet to a side and weighs as much as 15,000 pounds. The creature is completely transparent and dissolves living tissue with its acid.[1]


The following is drawn from the Monster Manual, 5th Edition,[1] but some of its abilities have been demonstrated onstream.

  • Condition Immunities: The blinded, charmed, deafened, exhaustion, frightened and prone conditions.
  • Attacks:
    • Pseudopod: The gelatinous cube can make a melee attack causing acid damage.[2]
    • Engulf: The gelatinous cube can enter a Large or smaller creature's space to cause damage and suffocate them.

Known gelatinous cubes[]

The Mighty Nein encountered and defeated a gelatinous cube in Siff Duthar's abandoned research facility.[3]

In the non-canonical one-shot "To the Poop! Goblins: A Critical Role Pathfinder One-Shot" (Sx09), the group of goblins stumbled upon a gelatinous cube in the sewers of the Sandpoint town.[4]

At some point between 836 and 843 PD[5] Timpani Guff, a member of the Slayer's Take brought a captured cube to a presentation in Himblewood to show potential new recruits what kind of monsters the guild fought. He, however, ended up freeing it by accident, and the creature started consuming local food, as well as a statue and a surprisingly enthusiastic halfling before it was killed by a group of four candidates.[6]


  1. 1.0 1.1 See D&D: Monster Manual, 5th ed., p. 241.
  2. See "Where The River Goes" (2x15) at 2:48:06.
  3. See "Where The River Goes" (2x15) from 2:37:38 through 3:02:15.
  4. See "To the Poop! Goblins: A Critical Role Pathfinder One-Shot" (Sx09) at 57:13.
  5. It is specified that this happens after the adventures of the Mighty Nein but before Bells Hells met.
  6. See "The Carnivorous Cube" (RTx01).


  1. Depiction of gelatinous cube, by Conceptopolis from D&D Monster Manual, 5th ed., p. 242. This page contains unofficial Fan Content permitted under the Wizards of the Coast Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC.
  2. Fan art of the goblins from "To the Poop! Goblins: A Critical Role Pathfinder One-Shot" (Sx09) fighting a gelatinous cube, by Kerri Aitken (source). Used with permission.