Zipper

The Zipper 1 is an enemy that appears in Sonic Boom: Shattered Crystal. They are a type of robot.

Appearance
The Zipper 1s are robots with nearly a complete purple coloration. They have a single large yellow eye with a thin pupil on the front and "eyelids" with a horn on the upper one, and possess a round and grey rocket behind their eye. Between the rocket and eye, they have a thick body segment with small wings on the side which curves over their rocket.