Twin Devil

Twin Devil (ツインデビル) is the boss of Wily Castle 3 in Mega Man 9. Like their Devil counterparts, these bosses are composed of individual globs of "jelly" and a single eye. The jelly move around the screen, damaging the opponent on contact. Unlike other Devils, this is the boss's only attack. However, the battle is made more difficult by the fact that the Twin Devil is actually two separate entities, one green sphere and one orange sphere. The sphere with the eye begins on the bottom right while the other begins in the top left. The globs break into 12 pieces and switch places one by one, some moving high, some moving low. After they have completely switched locations, they switch heights (the devil with the eye lowers and the devil without the eye rises). The only way to damage the Twin Devil is to damage the electronic eye as it moves between the two devils. It is difficult to damage the eye, but the Black Hole Bomb is extremely effective against the devil, and the nature of the weapon makes it very easy to hit.

Trivia

 * Twin Devil's two bodies are colored yellow and green, possibly as an homage to the Yellow Devil and the Green Devil from previous games.


 * Both Twin Devils appear alongside other Devil robots in the Short Circuits from the Archie Mega Man #55.


 * Twin Devil's eye bears a resemblance to the heads of the Pantheons from the Mega Man Zero series, which was also developed by Inti Creates.


 * Twin Devil is similar to Nightmare Mother from Mega Man X6.
 * This is the third Dual Boss to be featured in the Classic series, following Geminī Man (who is the only Dual Boss to be a proper Robot Master) in the third game and the Rounder II in the sixth Classic game. Suzak and Fenix are the next Dual Boss to be encountered, in the tenth game. The Thrill Twins are the fifth Dual Boss, faced in Mega Man 11: Gears of Fate.