Michael Nicholls (born 20 August 1985) is an Australian professional wrestler, better known by the ring name Mikey Nicholls. He is signed to WWE where he competes in their developmental territory NXT under the name Nick Miller. He has wrestled internationally in Australia, the United States, and also Japan. He is best known for his work in the Pro Wrestling Noah promotion, where, as part of The Mighty Don’t Kneel, he is a former two-time GHC Tag Team Champion. Other promotions he has wrestled for include New Japan Pro Wrestling in Japan and Ohio Valley Wrestling, Pro Wrestling Guerrilla, and Ring of Honor in the United States.