Legendary Resistance (3/Day). If Eye-Brawl fails a saving throw, it can choose to succeed instead.

Siege Monster. Eye Brawl deals double damage to objects and structures.

Undead Nature. Eye-Brawl doesn't require food, drink, or sleep, and doesn't need to breathe.

Multiattack. Eye-Brawl makes two haymaker attacks, then fires its eye laser.

Haymaker. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 24 (3d8 + 10) bludgeoning damage.

Eye Laser. Eye-Brawl rotates its eye to focus on one creature it can see within 120 feet of it. The creature must make a DC 17 Dexterity saving throw or take 16 (2d10 + 5) force damage

Frightful Gaze. Eye Brawl rotates its eye to focus on a creature it can see within 120 feet of it. The creature must make a DC 18 Wisdom saving throw or become frightened of Eye-Brawl for 1 minute.

Eye-Brawl can take 3 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. Eye-Brawl regains spent legendary actions at the start of its turn.

Haymaker. Eye-Brawl makes a haymaker attack.

Eye Laser (Costs 2 Actions). Eye-Brawl uses its eye laser.

Aura of Death (Costs 3 Actions). Eye-Brawl unleashes a vile aura of negative energy. This energy spreads around corners. Each creature within 60 feet of Eye-Brawl must succeed on a DC 23 Constitution saving throw, taking 32 (6d10) necrotic damage on a failed save, or half as much damage on a successful one.