Sources
CR
Type
Size
Alignment
Movement

Maw Demon

Medium Fiend (demon), Chaotic Evil

Armor Class 13 (natural armor)
Hit Points 33 (6d8 + 6)
Speed 30 ft.
STR
14
+2
DEX
8
-1
CON
13
+1
INT
5
-3
WIS
8
-1
CHA
5
-3
Damage Resistances cold, fire, lightning
Damage Immunities poison
Condition Immunities Charmed, Frightened, Poisoned
Senses darkvision 60 ft., passive Perception 9
Languages understands Abyssal but can't speak
Challenge 1 (200 XP)

Traits

Rampage. When it reduces a creature to 0 hit points with a melee attack on its turn, the maw demon can take a bonus action to move up to half its speed and make a bite attack.

Actions

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:11 (2d8 + 2) piercing damage.

Lore

Demon lords create lesser demons for the purpose of spreading chaos and terror throughout the multiverse.