Black Gear

Black Gears are dark gears located on File Island. They are used to control peaceful or good Digimon and turn them into mindless slaves whose only purpose is to serve the current master of the black gears. Black gears can be expelled by the infected Digimon getting hit in the infection region with a blast from another Digimon.

Pre-Genesis
Not much is known about the gears before the Chosen arrived in the Digital World. Devimon gained control over the gears and used them to enslave File Island. Weeks before the Chosen arrive in the Digital World, Ogremon tries to persuade a Minotaurumon to join Devimon, but Minotaurumon refuses. Ogremon then infects Minotaurumon with a black gear.

Genesis, Parts 1 & 2
The black gear infected Minotaurumon causing him to attack his former home and the Chosen when they first arrive in the Digital World. After being chased and beaten by Minotaurumon, Veemon ultimately digivolves into Veedramon and frees Minotaurumon from the black gear by blasting Minotaurumon's back which was the infected region.

Appearances

 * Genesis, Part 2
 * Duel of the Dinosaurs
 * The Twins Shall Rise
 * Lord of the Flies
 * Ironclad
 * The Enemy
 * Scattered
 * The Temple in the Sky
 * Devil's Gambit
 * The Demon's Fate
 * Departure