Chlorokaiju

Blood Frenzy. The Chlorokaiju has advantage on melee attack rolls against any creature that doesn’t have all its hit points.

Siege Monster. The Chlorokaiju deals double damage to objects and structures.

Aberration. The Chlorokaiju is considered an Aberration in addition to its other types.

Multiattack. The Chlorokaiju makes two Tentacle attacks and one Bite attack

Tentacle. Melee Weapon Attack: +9 to hit, reach 30 ft., one target. Hit: 28 (4d10 + 6) bludgeoning damage, and the target is grappled (escape DC 16) if it is a Huge or smaller creature. Until the grapple ends, the Chlorokaiju can’t use this tentacle on another target. The Chlorokaiju has four tentacles.

Bite. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 32 (4d12 + 6) piercing damage, and the target is swallowed if it is a Large or smaller creature. A swallowed creature is blinded and restrained, has total cover against attacks and other effects outside the Chlorokaiju , and takes 22 (4d10) acid damage at the start of each of the Chlorokaiju turns.

The Chlorokaiju’s gullet can hold up to three creatures at a time. If the Chlorokaiju takes 35 damage or more on a single turn from a creature inside it, the Chlorokaiju must succeed on a DC 20 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, each of which falls prone in a space within 10 feet of the Chlorokaiju. If the Chlorokaiju dies, a swallowed creature is no longer restrained by it and can escape from the corpse using 10 feet of movement, exiting prone.