Ape-X

Sentinel. When you hit a creature with an opportunity attack, the creature's speed becomes 0 for the rest of the turn. Creatures provoke opportunity attacks from you even if they take the Disengage action before leaving your reach. When a creature within 5 feet of you makes an attack against a target other than you (and that target doesn't have this feat), you can use your reaction to make a melee weapon attack against the attacking creature.

Infusion. Ape-X infuses blue power into his veins causing his muscles to ripple and bulge. Ape-x gains the benefits of: advantage on Strength checks and Strength saving throws, resistance to bludgeoning, piercing, and slashing damage.

Multiattack. Ape-X may use its Infusion and then make two fist attacks or 1 Force Machine Gun attack.

Fist. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 22 (3d10 + 6) bludgeoning damage.

Force Machine Gun. Each creature in a 60-ft cone must make a DC 17 Dexterity saving throw. A creature takes 6d8 force damage on a failed save and is knocked prone , or half as much on a successful save and is not knocked prone.

Protect Kwalish.   If Kwalish is within 30 feet of Ape-X and is damaged by an attack or spell Ape-X may use its reaction to move up to its movement speed towards Kwalish or the attacker.