Zoldeo

ゾルディオ

Zoldeo is a member of the Grimoire Heart Guild and one of the Seven Kin of Purgatory, having taken possession of Capricorn's body.
Zoldeo obtained Capricorn's key after Layla Heartfilia retired. He was supposed to hand it over to Lucy once she was ready to use Magic, but he became twisted and corrupted, swallowed by darkness. At some point, he broke a taboo of the Celestial Spirits by using his Human Subordination Magic, which somehow resulted in him possessing Capricorn's body. This is why Capricorn was able to remain in the human world for 17 years. Eventually, Master Hades found him, and he joined Grimoire Heart, becoming one of the Seven Kin of Purgatory.

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