<Li> Carell also voices Dru Gru, Gru's long - lost twin brother and the girls' adoptive uncle . </Li> <Li> Kristen Wiig as Lucy Wilde, an Anti-Villain League agent, Gru's wife and the girls' adoptive mother . </Li> <Li> Trey Parker as Balthazar Bratt, a supervillain and former child star who grows up to become obsessed with the character he played in the' 80s and is bent on world domination . </Li> <Li> Miranda Cosgrove as Margo, Gru and Lucy's oldest adoptive daughter . </Li>

Voice of bad guy in despicable me 3