Dru Gru. is the twin brother of Felonius Gru and son of Robert and Marlena Gru, Lucy 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 villainy for a while. Dru is also owner of Dru's mansion and Dru's Villain Wheels. He appears in the movie Despicable Me 3.