Gapsule ( is a sub-boss in ガプセル Gapuseru ) ? Flying Battery Zone from the game , as well as its locked-on form, Sonic & Knuckles Sonic the Hedgehog 3 & Knuckles. The boss is modeled after a Capsule.
To defeat the boss, the player must stand on the button long enough to make the Gapsule to try crush them with one of his spike-ball arms. If the player jumps out of the way quickly enough, Gapsule will hit itself instead, dealing a hit in damage. After dealing itself six blows, the boss explodes, and the player proceeds to Act 2.
This was the final boss of the
Sonic & Knuckles game in the Sonic Jam version for the Game.com. Like all other bosses, it has become much slower and less difficult to defeat.
Interestingly, There exists unused sprites for a boss enemy known as Janken Capsule in Studiopolis Zone's files. The boss has a very strong resemblance in design to the Gapsule and would have utilized a Rock-Paper-Scissors gimmick for its fight, implying a possible callback to  Alex Kidd as well.
(29 August 2017). Retrieved on 31 August 2017. Sonic Mania: Hacking Diccussion
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