Demodragon

Huge Fiend (Demon)

AC: 16

Initiative: +3 (13)

HP: 102 (12d12 + 24)

Speed: 40 ft., fly 60 ft.

STR
19 (+4)
DEX
10 (+0)
CON
15 (+2)
INT
8 (-1)
WIS
12 (+1)
CHA
10 (+0)

Saving Throws: Con +5, Wis +4

Resistances: acid; cold; lightning

Immunities: poison

Condition Immunities: charmed; frightened; poisoned

Senses: Blindsight 120 ft., Passive Perception 11

CR: 5 (XP 1,800; PB +3)

Baleful Presence.

Sources of light in a 120-foot Emanation originating from the demodragon flicker wildly. Nonmagical sources of Bright Light in that area instead shed Dim Light.

Regeneration.

The demodragon regains 10 Hit Points at the start of each of its turns if it has at least 1 Hit Point

Actions

Multiattack.

The demodragon makes two Bite attacks.

Bite.

Melee Attack Roll: +7, reach 10 ft. Hit: 11 (2d6 + 4) Piercing damage plus 4 (1d8) Acid damage.

Acid Breath (Recharge 5-6).

Dexterity Saving Throw: DC 13, each creature in a 30-foot-long, 5-foot-wide Line. Failure: 22 (4d10) Acid damage. Success: Half damage.

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Demodragon

Source: Stranger Things: Welcome to the Hellfire Club - Licenses and attribution