Thessalhydra Huge Monstrosity, Unaligned 4 1 xp

Armor class 14 (natural armor)
Hit points 69 (6d12 + 30)
Speed 30 ft., Swim 30 ft.

STR19 (+4)
DEX12 (+1)
CON20 (+5)
INT5 (-3)
WIS19 (+4)
CHA7 (-2)

Skills: Stealth +4

Damage Immunities: acid

Condition Immunities: Blinded, charmed, deafned, frightened, stunned

Senses: darkvision 60 ft., passive Perception 14

Languages: -

Challenge:4 (1 xp)

The thessalydra is a strange and terrible creature with eight heads surrounding a large, circular mouth rimmed with jagged teeth. Its maws drips with aci, and its tsil ends with a pair of sharp pincers. The thessalhydra is gluttonous and damaging to any environment.

Actions

Multiattack. The thessalhydra makes one maw attack and one Flurry of Bites.
Flurry of Bites. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 7 piercing damage plus 10 posion damage.
Maw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 9 piercing damage plus 5 acid damage.
Tail Pincer. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 10 slashing and the target is grapped. As an action, the target can escape the grapple by succeedingon a DC 14 “Atheletics” or “Acrobatics” check (its choice). Until this grapple ends, the Thessalhydra can’t use its tail pincer.
Acid Saliva (Recharge 5-6). The thessalhydra splits a glob of acid at a point it can see within 30 feet of it. Each creature within 10 feet of that point must make a DC 15 Dexterity saving throw, taking 18 acid damage on a failed save, or half as much damage on a successful one.

Legendary Actions

The Thessalhydra can take 2 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The Thesalhydra regains spent legendary actions at the start of its turn.

Detect. The Thessalhydra makes a Wisdom (Perception) check with advantage.
Tail Swipe. The Thessalhydra makes a tail pincer attack.

Demagorgon Medium Monstrosity, Unaligned 4 1 xp

Armor class 15 (Natural armor)
Hit points 60 (8d8 + 34)
Speed 30 ft.

STR16 (+3)
DEX12 (+1)
CON16 (+3)
INT3 (-4)
WIS12 (+1)
CHA5 (-3)

Skills: Stealth +5, Perception +3

Senses: blindsight 60ft., passive Perception 13

Languages: -

Challenge:4 (1 xp)

A predator of the Upside Down, the demagorgon hunts the dimension looking for unfortunate creatures that find their way there. The size and shape of an adult humanoid, the demagorgon's mouth encompases its face and unfolds like a blossoming flower.

Keen Smell. The demagorgon has advantage on Wisdom (Perception) checks that rely on smell.
Blood Frenzy. The demagorgon has advantage on melee attack rolls against any creature that doesn’t have all its hit points.
Regeneration. The demagorgon regains 10 hit points at the start of its turn. If the demagorgon takes acid or fire damage, this trait doesn’t function at the start of the demagorgon’s next turn. The demagorgon diez only if it starts its turn with = hit points and doesn’t regenerate.

Actions

Multiattack. The demagorgon makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 piercing damage.
Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 12 slashing damage.

Demadog Medium Monstrosity, Unaligned 4 1 xp

Armor class 15 (natural armor)
Hit points 50 (6d8+34)
Speed 50 ft., climb 40 ft.

STR14 (+2)
DEX15 (+2)
CON14 (+2)
INT3 (-4)
WIS12 (+1)
CHA6 (-2)

Save Throws: Stealth +5, Perception +3

Senses: blindsight 60ft., passive Perception 14

Languages: -

Challenge:4 (1 xp)

Keen Smell. The demadog has advantage on Wisdom (Perception) checks that rely on smell.
Blood Frenzy. The demadog has advantage on melee attack rolls against any creature that doesn’t have all its hit points.
Regeneration. The demadog regains 10 hit points at the start of its turn. If the demagorgon takes acid or fire damage, this trait doesn’t function at the start of the demagorgon’s next turn. The demadog dies only if it starts its turn with = hit points and doesn’t regenerate.
Pounce. If the demadog moves at least 20 ft. straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 12 Strength saving throw or be knocked prone. If the target is prone, the panther can make one bite attack against it as a bonus action.

Actions

Multiattack. The demadog makes two attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 piercing damage.
Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 12 slashing damage.

Henry Bowers Medium Humanoid, Caotic Evil 0 xp

Armor class 10
Hit points 15
Speed 30 ft.

STR15 (+2)
DEX11 (0)
CON12 (+1)
INT10 (0)
WIS11 (0)
CHA10 (0)

Languages:

Challenge: (0 xp)

Pack Tactics. He has advantage on attack rolls against a creature if at least one of his allies is within 5 feet of the creature and the ally isn’t incapacitated.
Reckless attack. He can throw aside all concern for defense to attack with fierce desperation. When he makes his first attack on his turn, he can decide to attack recklessly. Doing so gives him advantage on melee weapon attack rolls using Strength during this turn, but attack rolls against you have advantage until your next turn.

Actions

Punch. Melee Attack: +2 to hit, reach 5 ft., one creature. Hit: 3 bludgeoning damage

Henry Bowers' Friends Medium Humanoid, Caotic Evil 0 xp

Armor class 5
Hit points 12
Speed 30 ft.

STR12 (+1)
DEX12 (+1)
CON11 (0)
INT10 (0)
WIS11 (0)
CHA10 (0)

Languages:

Challenge: (0 xp)

Pack Tactics. He has advantage on attack rolls against a creature if at least one of his allies is within 5 feet of the creature and the ally isn’t incapacitated.

Actions

Punch. Melee Attack: +2 to hit, reach 5 ft., one creature. Hit: 3 bludgeoning damage