Astral dreadnoughts are enormous predators in the Astral Sea that send the things they consume to a unique demiplane.
The astral dreadnought the Mighty Nein saw via the Folding Halls of Halas was 20 to 25 feet on a side, though its silvery tail seemed to curl off into an impossible distance. It was shaped like a bulbous, muscular serpent with two thick arms ending in pincers. Its body was covered in spiky armored plates and hardened, veiny, pale flesh plates. Its face had a single eye with a horned brow and a 12-foot-wide mouth edged with hundreds of two-foot-long teeth.
Known Astral Dreadnoughts
- Halas Lutagran kept an astral dreadnought chained and blinded, with a lever controlling the opening and closing of its mouth, so that he could use the capacious demiplane within as a ritual chamber.
Skills and Abilities
- Demiplanar Donjon: The Mighty Nein entered the dreadnought's mouth to find a demiplane that Halas had used.
- Given that Halas kept a large platinum plate bolted over the dreadnought's eye, the astral dreadnought in Critical Role likely has the same ability as in Mordenkainen's Tome of Foes: creating an antimagic cone.
- Knowing that Vokodo had desperately fled from something in the Astral Sea, Fjord used Major Image to create an illusory, smaller-than-usual astral dreadnought to frighten Vokodo during their battle. Despite Fjord having to guess at what an active dreadnought sounds like, the illusion worked: Vokodo was chased around the lair.
- See D&D: Mordenkainen's Tome of Foes, 5th ed., p. 117.
- See D&D: Mordenkainen's Tome of Foes, 5th ed., p. 118.
- See D&D: Mordenkainen's Tome of Foes, 5th ed., pp. 117–118.
- See "Rumble at Rumblecusp" (2x105) at 3:42:53.
- See "The Beat of the Permaheart" (2x82) at 4:11:20.
- See "The Beat of the Permaheart" (2x82) from 4:17:15 through 4:18:08.
- See "The Beat of the Permaheart" (2x82) from 4:21:58 through 4:25:09.
- See "Dark Bargains" (2x83) at 1:42:45.
- See "Rumble at Rumblecusp" (2x105) at 3:42:04. See 3:51:03 for Vokodo's initial freaked-out reaction.
- . This file is 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.
- Fan art of Halas's chained dreadnought, by Nikki Dawes (source). Used with permission.