Medium
Monstrosity
CR 8
Lawful Evil
Ktharr-Shell
Cerebral Shellguard
Ktharr-Shell is an unnerving fusion of courtier and crustacean: a hulking humanoid crab whose bulbous carapace bristles with razor ridges and whose eyes glint with cold, calculating intellect. It stands sentinel beside tyrants, not only to rend intruders with crushing claws but to invade their minds—sifting secrets, planting commands, and unspooling fear with a single thought. In court, its voice is silence and its threat is the knowing glance it implants behind a prince's brow; in battle, its claws speak a far more brutal language.
Armour
16
natural armor
Hit points
145
17d8+68
Speed
30ft
30 ft., swim 30 ft.
Challenge
8
3,900 XP
STR
18
+4
DEX
14
+2
CON
18
+4
INT
12
+1
WIS
14
+2
CHA
18
+4
Saving throws
STR +7, CON +7
Skills
Athletics +7, Perception +5, Stealth +5
Senses
darkvision 60 ft., passive Perception 12
Languages
Understands Common and Aquan but can't speak; telepathy 120 ft.
Multiattack. The creature makes two Claw attacks.
Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8+4) slashing damage.
Piercing Mind (Recharge 5-6). The Ktharr-Shell fixes its central eye on one creature it can see within 60 feet. The target must succeed on a DC 15 Wisdom saving throw or take 27 (6d8) psychic damage and be stunned until the end of the Ktharr-Shell's next turn. On a successful save, the target takes half as much psychic damage and is not stunned.
Countercrush. When a creature the Ktharr-Shell can see hits it with a melee attack, the Ktharr-Shell makes one Claw attack against that creature as a reaction.
Ktharr-Shell are bred and bound by quarry-kings of salt-washed realms that prize both muscle and mind. Old shipping magnates and petty monarchs of the Foamward Palaces purchased young broodlings from reef-witches and raised them in isolation, subjecting them to ritual tethering and thought-conditioning. Over generations certain strains acquired unusually strong telepathic centers; those chosen to become Shellguards are grafted with sigils and trained to read and enforce courtly hierarchies. Many coastal courts whisper that Ktharr-Shell are the true keepers of a king’s conscience rather than his nobles. Scholars disagree on the creatures’ deeper origin. The tide-archives of the Guild of Tideminders posit a crossbreeding between seafolk monstrosities and captive humanoid brains, while hermit lecturer Maren Riln of Kest argues the telepathy results from exposure to drowned librarians’ spirits clustered in submerged vaults. Wherever they spring from, they prefer palace basements, submerged guard chambers, and cliffside watchrooms. Factions such as the Bleached Scepter have attempted to steal or replicate a Shellguard’s mental conditioning; few survive an encounter with one, and fewer still return with coherent testimony.
Ktharr-Shell stands roughly as tall as a human warrior—about 6 to 6½ feet when upright—its torso humanoid but armored by an overlapping carapace the color of wet pewter. Two primary claws replace its hands: broad, serrated pincers banded with pale growth rings and tipped with needlelike inner teeth. A crown of small stalked eyes circles a central, obsidian ocular bulge that never blinks. Along its back, barnacle-like ossicles form jagged ridges; faint runic scars glow dull green when it probes a mind. Its mouth is a concentric, beaklike maw under the carapace, used mostly to rasp soft foods. Skin where visible is rubbery and the joints hiss with saltwater; a faint, metallic perfume of iodine surrounds it. Scale references: next to a human, its carapace is broad enough to block a doorway and its claws would take up a shield wall.
Made with the free LoreKeeper Monster Generator · D&D 5e-compatible stat block · Free to use at your table · Licence
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