It's Core is the Densest of Any Pokemon!

Reginova is an incredibly dense Pokemon. Its core is made of pure Origin Energy and stardust, which implies that Regigigas did not make it. Rather, it's been theorized that Reginova made Regigigas. Unlike many of the other Regis, however, the people of old in the Carah Region did not fear Reginova. It was often seen as a savior of energy and life during the Intermediate Rule. The Ether Temple, where it resides, is locked for some reason. It appears that Reginova is looking for something...

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Signature Move: Quasar (Astral) - 140 base Sp. Atk/100% acc. The user absorbs the power of its core to release a powerful quasar blast, damaging all foes around it. The user must recharge the next turn.