<Li> Steve Carell as Gru, a mean supervillain </Li> <Li> Jason Segel as Victor "Vector" Perkins, Mr. Perkins' son and Gru's archenemy </Li> <Li> Russell Brand as Dr. Nefario, Gru's elderly gadget man and a friendly scientist </Li> <Li> Miranda Cosgrove as Margo, the oldest of the three girls </Li>

What part does russell brand play in despicable me