Dru Gru is one of the main characters in Despicable Me 3, the twin brother of Felonius Gru and son of Robert and Marlena GruLucy Wilde's brother-in-law, and the adoptive paternal uncle of Margo, Edith, and Agnes. After the reunion with his brother and his family, Dru looks forward to learn some skills of being a villain from him, though Gru had been an Anti-Villain League agent and quit villany for a while. Dru is also owner of Dru's mansion and Dru's villain wheels.

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