Cthulhu Spawn

huge aberration (elder), chaotic evil

Challenge 15.0 (13,000 XP)

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STR
26 (+8)
DEX
14 (+2)
CON
24 (+7)
INT
18 (+4)
WIS
20 (+5)
CHA
22 (+6)

Defense

Armor Class
18 (Natural)
Hit Points
300 (20d12 + 140 +5)
Speed
40 ft., swim 60 ft.

Proficiencies & Senses

Saving Throws Wisdom, Intelligence, Charisma
Skills
Arcana +8, History +8, Insight +10, Religion +8, Deception +11, Perception +10, Intimidation +11, Investigation +8
Senses
darkvision 120 ft.
tremorsense 60 ft.
Eldritch Sense 300 ft. (Able to perceive the presence of living creatures within range, regardless of barriers.)
passive Perception 20

Characteristics

Damage Vulnerabilities
Radiant
Damage Resistances
Psychic, Cold, Fire
Damage Immunities
Poison
Condition Immunities
Charmed, Frightened, Paralyzed, Poisoned
Languages Deep Speech, Telepathy 120 ft.

Traits

Eldritch Resilience

Cthulhu Spawn has advantage on saving throws against being charmed or frightened.

Spawn of Madness

Any creature that starts its turn within 30 feet of the Cthulhu Spawn must succeed on a DC 20 Wisdom saving throw or be subjected to the Confusion effect until the start of its next turn.

Tentacle Strike

Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 36 (4d12 + 8) bludgeoning damage and the target is grappled (escape DC 16). Until this grapple ends, the target is restrained and the Cthulhu Spawn can't use that tentacle on another target.

Actions

Multiattack

The Cthulhu Spawn makes three Tentacle Strikes.

Psychic Scream

The Cthulhu Spawn unleashes a psychic wave. Each creature within a 60-foot cone must make a DC 20 Intelligence saving throw, taking 45 (10d8) psychic damage on a failed save, or half as much damage on a successful one.

Reactions

Unnerving Dodge

When a creature hits the Cthulhu Spawn with an attack, it can use its reaction to impose disadvantage on the attack roll.

Combat Behavior

Tactics


• Ambush from the dark depths of the ocean
• Target the most intelligent enemy first
• Utilize confusing abilities before engaging physically

Combat Style

Predatory and cunning; strikes from the shadows, utilizing psychic manipulation to weaken opponents before physical confrontation.

Morale

Cthulhu Spawn will retreat if they are significantly outnumbered or if their master is threatened.

Monster Description

The Cthulhu Spawn are the corrupted remnants of ancient sea creatures, imbued with the madness of their master, Cthulhu. Towering over most creatures, they possess horrifying tentacles and a grotesque visage that evokes fear and dread in those who gaze upon them. Their flesh reeks of brine and decay, and they are often surrounded by strange whispers that drive the weak-minded to insanity.

Monster behavior

Cthulhu Spawn are not mindless beasts; they exhibit intelligence and cunning in combat. They prefer to ambush unsuspecting prey from the shadows of their lairs, using their psychic abilities to disorient and confuse opponents before slipping back into the water. They are often accompanied by a swarm of lesser minions or aquatic horrors, employing hit-and-run tactics while ensuring they remain just out of sight.

Ecology

In the deep ocean, Cthulhu Spawn are apex predators, rarely challenged by other creatures. Their bioluminescent bodies often attract smaller fish, which ironically become prey for them. This balance within the ecosystem has thrown off the natural order, leading to the rise of bizarre mutations in surrounding flora and fauna as the influence of Cthulhu spreads.

History

The legend of Cthulhu dates back millennia, whispered through the ages by cultists and madmen. As the Spawn of Cthulhu rise to be more than mere folklore, they instill terror across coastal towns. Many adventurers have tried to hunt them, seeking glory and treasure, yet they rarely return, leaving only faint echoes of their screams. The Cthulhu Spawn has become synonymous with the ever-looming threat of their master’s return, a reminder of what lies beyond the known world.

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