Megaman Polarity Reconstruction

Megaman fought two separate battles with this "polarity shield." The first was with a new enemy which, as a good test to the shield, fired completely opposite weapon polarity than what Megaman was used to. Megaman's second battle was with Bass, who also had obtained a polarity switching shield of his own. When Megaman defeated him, Bass hinted that there was more to come. A short while later, a lab was found which appeared to be experimenting with the technology. Could this be what Bass was referring to? Hint: this takes place BEFORE Polarity 3... (description from gamezhero)

Source: https://www.gamezhero.com/games/megamanpolarity

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