Answer
Ace, Grubber, and Big Billy were all voiced by Jeff Bennett in The Powerpuff Girls. Ace was the leader of the Gangreen Gang, a group of delinquent boys who often antagonized the Powerpuff Girls. Grubber was a member of the Gangreen Gang who was known for his love of food. Big Billy was a giant monster who was created by Mojo Jojo to destroy the Powerpuff Girls.