Abstract: A motorized toy incorporating a drive source and moving while performing a series of predetermined repetitive motions, includes a plurality of protruding pieces extending from an interior of a body to the outside thereof, passing through notches cut in the peripheral portions of a cover member. The body incorporates main and auxiliary shafts, each rotating by receiving, via gears, transmission of a driving force from the drive source. The protruding pieces are automatically housed in the cover member, as they interlock with rotation of the main shaft. Rotation of the auxiliary shaft is transferred to the cover member via levers actuated during the period that the protruding pieces are housed within the cover member, and the cover member makes a predetermined number of revolutions. Upon completion of the rotation of the cover member, the protruding pieces housed therein spring out of the body. These operations are continually repeated.