Welcome to Imagine by Rubie's where it's play time all the time! Ninja dress-up set: Ninja shirt, mask, and belt comes with pretend weapons. Imagine by Rubie's, the toy division of Rubie's costume, offers a full line of licensed and classic dress-up costumes and accessories for children in separates as well as boxed sets. Rubie's by imagine dress up sets encourage children's imagination, creativity, and personal expression.