Alucard

Deadly Critical. Alucard scores a critical hit on a roll of 18–20, and his critical hits deal an extra 14 damage.

Legendary Resistance (2/Day). If Alucard fails a saving throw, he succeeds instead.

Multiattack. Alucard makes three Longsword or Unarmed Strike attacks in any combination. He can replace one Longsword attack with a Smite.

Longsword. Melee or Ranged Attack Roll: +12, reach 5 ft. or range 30 ft. Hit: 13 (1d10 + 8) Slashing damage, and Alucard chooses one of the following additional effects: (A) Push. The target is pushed up to 10 feet away from Alucard if it's Large or smaller, (B) Sap. The target has Disadvantage on its next attack roll, or (C) Vex. Alucard has Advantage on his next attack roll against the target until the end of his next turn.

Smite. Melee Attack Roll: +12, reach 5 ft., one Fiend or Undead creature. Hit: 35 (6d8 + 8) Radiant damage, and the target begins burning.

Unarmed Strike. Melee Attack Roll: +12, reach 5 ft. Hit: 11 (2d4 + 6) Bludgeoning or Slashing damage.

Counterattack. Trigger: Alucard is hit by a melee attack roll while holding his sword. Response: Alucard adds 6 to his AC until the end of the turn. On a miss, Alucard can make one Longsword attack against the attacker.

Regroup (Recharge 6). Trigger: Alucard takes damage. Response: Alucard shape-shifts into a swarm of bats until the end of the turn and moves up to half his speed without provoking Opportunity Attacks. A creature takes 10 (4d4) Piercing damage if Alucard passes through its space during this movement.

Legendary Action Uses: 3. Immediately after another creature’s turn, Alucard can expend a use to take one of the following actions. He regains all expended uses at the start of each of his turns.

Pounce. Alucard moves up to half his Speed without provoking Opportunity Attacks and makes a melee attack.

Shape-Shift. Alucard shape-shifts along with his equipment into a white wolf or a swarm of bats until the end of his next turn. His game statistics other than his size don't change.