When a Middle Ghost(miniboss) is destroyed, a Spectre-Spirit appears and must be captured. It is green and slightly resembles Slimer. It is possible that the Spectre-Spirit is intended to be a weakened version of the Middle Ghost.
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When a Middle Ghost(miniboss) is destroyed, a Spectre-Spirit appears and must be captured. It is green and slightly resembles Slimer. It is possible that the Spectre-Spirit is intended to be a weakened version of the Middle Ghost.