A motion toy, which includes a toy body, and a power drive unit, the toy body having a front body shell and a rear body shell fastened together, two arms coupled to the body shells at two opposite lateral sides, a head pivotably mounted in the body shells at a top side by a pivot and coupled to the arms, two feet, and two legs coupled between the body shells and the feet, wherein two elongated links are coupled between the arms and a rocker, which is turned back and forth about a pivot between the body shells by a center gear of the power drive unit, for enabling the arms to be synchronously turned back and forth when the legs are moved back and forth by the center gear of the power drive unit relative to the feet, and two Z-shaped links are coupled between the arms and a bottom coupling rod at the head for enabling the head to be oscillated upon the motion of the arms.