Mindy forms one of the triplet sisters with Mendy and Mundy, all serving as warriors in The Power under Commander Kurenai's command aboard the mobile fortress Deca-dence. These triplets rank among the youngest Tankers in the combat unit.

During the "Mt. Everest" mission, Mindy suffered critical injuries fighting Gadoll alpha. Despite her grave state, she voiced profound distress over the recurring sacrifice of young Tankers against the Gadoll onslaught. She declared her intervention arose from an unwavering determination to break this cycle, stating she refused to witness more young comrades fall.

Later assigned to Team 6 for a major assault on an icy wasteland Gadoll nest, Mindy and her sisters oversaw the integration and care of new recruit Natsume before the operation. This assignment proceeded despite Kaburagi's attempts to bar Natsume from the system-orchestrated high-casualty event, confirming Mindy's persistent active combat role in The Power's critical missions.