Disco is a stand user and he appears to distract Gyro and Johnny and to defeat they with Funny Valentine. His stand is Chocolate Disco.
Stand: Chocolate Disco
Chocolate Disco appears in the form of a armband with a grid-pattern. When activated, the same type of patterned lines spread from the user's feet, covering about 20 feet in front of him. By pressing a button on the armband, any projectiles or objects can be instantly transported to the corresponding area (Press F5 on armband, object falls on F5). Even if the objects were not moving, they seem to fall with great force and speed. The strength behind this stand is the timing.