The apparent official identity is a magical disguise used by Grindelwald.
Newt unmasks Graves and reveals that Graves is actually Grindelwald in disguise.
Graves uses institutional power to oppose Newt's efforts.
Graves accuses Newt of conspiring with a dark wizard, sentences him to death, and later attacks him during the underground confrontation.
Graves challenges Picquery's authority from within MACUSA.
Picquery orders the Aurors to apprehend Graves after he openly rejects MACUSA's policy and defeats the responding Aurors.
Graves occupies a senior security position over the Auror force.
Graves serves as Director of Magical Security and commands or confronts the Aurors during the investigation and final crisis.
Their opposing approaches to the magical–No-Maj divide create thematic conflict.
Mary Lou publicly preaches that witches and wizards are dangerous, while Graves seeks to expose the magical community to No-Majs.
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Related entry on Wikidata (Q1377227), public domain (CC0).