Big Daddy

Grappler. Attacks made with Big Daddy's drill has advantage against a grappled target.

Siege Monster. The Big Daddy deals double damage to objects and structures.

Heavy. The Big Daddy can't swim but water doesn't hinder it's movement.

Amphibious. When it's suit is unruptured it can breathe both air and water. When the suit is ruptured it can only breathe air.

Multi Attack. The Big Daddy makes two attacks: one with it's backhand and another with it's drill.

Backhand. Melee Weapon Attack: +8 to hit, reach 5ft., one target. Hit: 11 (2d6 + 5) bludgeoning damage. Immediately after a hit the Big Daddy can use it's Bonus Action to attempt to grapple the target. When grappling the Big Daddy loses this attack.

Drill. Melee Weapon Attack: +8 to hit, reach 5ft., one target. Hit: 13 (2d8 + 5) piercing damage.

At the start of each of it's turns Big Daddy gets 3 legendary actions

Injector (Costs 3 Actions). Big Daddy slams it's fist down on it's suit triggering an injector. The Big Daddy heals for 9 (1d10 + 4). This action can't be used again until after it's next turn.

Backhand (Costs 1 Action). Melee Weapon Attack: +8 to hit, reach 5ft., one target. Hit: 11 (2d6 + 5) bludgeoning damage. Immediately after a hit the Big Daddy can use it's Bonus Action to attempt to grapple the target. When grappling the Big Daddy loses this attack.