Chocolate Disco manifests itself as an armband on D-I-S-C-O's forearm, which has the ability to divide the nearby environment into a grid and reposition anyone caught in the grid at will.
Chocolate Disco is a forearm guard resembling a vambrace. It has a grid pattern of eight columns with coordinates indicated with letters and numbers, similarly to the board game Battleship. Each cell can be pressed.
The arm guard and grid are yellow-brown in the colored manga.
Chocolate Disco functions as a tool that grants D-I-S-C-O great control over flying objects in a large zone. As a result, Gyro Zeppeli is at a disadvantage against him with his Steel Balls.
However, its tool-like nature and lack of any way to directly harm someone means that D-I-S-C-O is powerless at close range and relies on using miscellaneous objects he keeps on him to attack.
When D-I-S-C-O activates Chocolate Disco, a grid with the rows labeled as letters and columns labeled as numbers appear from his feet, covering about twenty feet in front of him.
By pressing one or several buttons on the arm guard, any flying projectile or object can be instantly transported to the corresponding area(s) (e.g. by pressing F5 on the arm guard, an object is teleported onto the F5 space), falling down.
D-I-S-C-O typically makes various harmful objects like nails or acid fall down on his target and also defends himself from projectiles by teleporting them away from him and into the assailant.
The weakness of this ability is that D-I-S-C-O must correctly assert in which coordinates he wants to teleport the flying objects to attack. If he misses, he becomes defenseless at close range.
- Chocolate Disco's name was originally written as "Chokoreito Disuko" (チョコレイト・ディスコ) in the Ultra Jump serialization of Steel Ball Run. The spelling later changed to "Chokorēto Disuko" (チョコレート・ディスコ) in SBR Volume 17.
- The original spelling of Chocolate Disco is notable for being the same as the one used in "Chocolate Disco" by Perfume, which was the namesake for the Stand.