<Li> General Gut (voiced by John Dybvig) - General Gut is an overweight Nighlok who is one of Master Xandred's best warriors . This monster was destroyed by the Samurai Shark Megazord . </Li> <Li> Sergeant Tread (voiced by Geoff Dolan) - Sergeant Tread is a Nighlok with wheels for hands who is one of Master Xandred's best warriors . He is the only Nighlok that lacks a second life . </Li> <Li> Duplicator (voiced by Joel Tobeck) - A skull - faced Nighlok that serves Serrator . He can make mirror duplicates of himself . He can also wield a sword and shoot shadow balls . This monster was destroyed by the Claw Armor Megazord and the Light Megazord . </Li> <Li> Grinataur (voiced by Charlie McDermott) - Grinataur is a large - mouthed Nighlok that serves Serrator . He can shoot black sand out of his tongue that can make people hungry and thirsty as well as emitting energy balls . This monster was destroyed by the Samurai Gigazord . </Li>

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