Black Gear

The Black&#160;Gears are evil devices used by Devimon&#160;to control good Digimon and turn them evil. He also uses them to break&#160;File&#160;Island into pieces.

The first Digimon attacked by a Black&#160;Gear is Meramon. Biyomon&#160;digivolves to&#160;Birdramon and destroys the black gear.

Andromon is trapped under a machine, and a black gear goes into his leg, making him attack the Digidestined, but Tentomon&#160;digivolves into&#160;Kabuterimon and destroys the black gear.

Monzaemon&#160;is attacked by a Black&#160;Gear, but it is driven out and destroyed when&#160;Palmon&#160;digivolves into&#160;Togemon.

Unimon is attacked by a Black&#160;Gear on&#160;Infinity Mountain. Gomamon&#160;digivolves into&#160;Ikkakumon and destroys the black gear.

Frigimon&#160;is attacked by a Black&#160;Gear and tries to freeze Tai and Agumon, but Agumon gets on&#160;Frigimon's back and destroys the black gear.

Mojyamon&#160;is also attacked by a black gear, but Greymon and Garurumon destroy it.

Centarumon&#160;is attacked by a black gear, which is destroyed by Kabuterimon and Togemon.

Leomon&#160;is infected by&#160;Devimon with the Touch of Evil, and is later powered up by seven more black gears, but the Digidestined use their Digivices to drive all the Black Gears out.

Devimon turns Ogremon into black gears, and absorbs them all to become bigger and stronger, but he is destroyed&#160;when&#160;Patamon&#160;digivolves into&#160;Angemon.

Even after Devimon's death, the black gears live on; Whamon&#160;was attacked by a black gear inside his stomach, however Agumon destroyed it. Also, a Drimogemon&#160;was infected by a black gear to guard the tags, which&#160;Devimon hid from the Digidestined, and the gear was also driven out. This was the final black gear.

The theme of black gears is later explored again in&#160;Adventure 02&#160;when the Digimon Emperor&#160;uses dark rings and dark spirals to control Digimon.