Big Squirt

Fire Absorption. Whenever Big Squirt is subjected to fire damage, it takes no damage and instead regains a number of hit points equal to the fire damage dealt.

Immutable Form. Big Squirt is immune to any spell or effect that would alter its form.

Magic Resistance. Big Squirt has advantage on saving throws against spells and other magical effects.

Magic Weapons. Big Squirt's weapon attacks are magical.

Extending Arms. Big Squirt has a range of 30 feet for attacks and grapples made with his arms.

Exposed Furnace. If the fire inside Big Squirt's furnace is doused by at least 20 gallons of water, he must make a DC 20 Constitution saving throw. If he succeeds, the water evaporates and he continues functioning. If he fails, Big Squirt will be incapacitated until the fire is lit again.

Loose Head. If Big Squirt's head is removed with a DC 25 Athletics check, Big Squirt will revert to Squirt the Oil Can and the body will be disabled.

Multiattack. Big Squirt makes two attacks.

Molten Fist. Melee Weapon Attack: +8 to hit, reach 30 ft., one target. Hit: 8 (2d6 + 5) bludgeoning damage and 7 (1d12) fire damage.

Spitfire. Ranged Attack: +8 fire damage.

Big Squirt gets 2 legendary actions a round.

Into the Furnace. Big Squirt can make attempt to grapple any medium or smaller target within 30 feet. If successful, the target takes 8 (2d6) fire damage and is pulled into his furnace.

Fire Breath (Recharge 6). Big Squirt exhales fire in a 30-foot cone. Each creature in that area must make a DC 15 Dex saving throw, taking 25 (4d8) fire damage on a failed save, or half as much damage on a successful one.

Burning Furnace. Creatures take 18 (4d6) fire damage at the start of Big Squirt's turn. Escaping from the furnace takes half the characters movement and a successful DC 16 Strength (Athletics) or Dex (Acrobatics) check.

Smog Cloud (Recharge 6). Big Squirt releases a large plume of smog from his exhaust pipes, creating a 20-foot-radius sphere of smog centered on himself. The sphere spreads around corners, and its area is heavily obscured. It lasts until the start of Big Squirts turn, or until a wind of moderate or greater speed (at least 10 miles per hour) disperses it.