Volm is a dome-shaped gun turret on a platform with small legs. Its design has changed subtly in each game it has appeared in. It has a red dome in Kirby Super Star and Kirby Super Star Ultra, and a pink one in Kirby: Planet Robobot. It has two cubic appendages in Kirby Super Star, two spherical purple appendages in Kirby Super Star Ultra, and four cylinder-shaped purple appendages in Kirby: Planet Robobot.
Volm appears inside Galactic Nova with Pata and Dacooga enemies. Volm moves around walls, floors, and ceilings. It shoots small, flashing bullets when Kirby's Starship approaches. The enemy explodes when hit with one shot.
When Kirby enters Star Dream Soul OS, the Mother Computer's heart fires Patas, Dacoogas, and Volms. They explode on impact. This is the only game in the series in which Kirby can inhale Volm.
ボルム (Borumu) may derive from ボム (bomu), meaning "bomb".