Suggestions by @user_284781

Peter Renaday

as Mowdown in The Amazing World of Gumball (2001-2009)

Gilbert Gottfried

as Billy Parham in The Amazing World of Gumball (2001-2009)

June Foray

as Felicity Parham in The Amazing World of Gumball (2001-2009)

Peter Fernandez

as Sal Left Thumb in The Amazing World of Gumball (2001-2009)

Harold Gould

as Marvin Finkleheimer in The Amazing World of Gumball (2001-2009)

Bill Farmer

as Doughnut Sheriff in The Amazing World of Gumball (2001-2009)

June Foray

as Judith Fitzgerald in The Amazing World of Gumball (2001-2009)

Bill Fagerbakke

as Patrick Fitzgerald in The Amazing World of Gumball (2001-2009)

Rob Paulsen

as Garry Hedges in The Amazing World of Gumball (2001-2009)

Tom Kenny

as Harold Wilson in The Amazing World of Gumball (2001-2009)

June Foray

as Banana Barbara in The Amazing World of Gumball (2001-2009)

Frank Welker

as Mrs. Robinson in The Amazing World of Gumball (2001-2009)

Eddie Carroll

as Mr. Robinson in The Amazing World of Gumball (2001-2009)

Robert Culp

as Louie Watterson in The Amazing World of Gumball (2001-2009)

Powers Boothe

as Frankie Watterson in The Amazing World of Gumball (2001-2009)

June Foray

as Joan Markham in The Amazing World of Gumball (2001-2009)

Michael Jackson

as Mr. Corneille in The Amazing World of Gumball (2001-2009)

Michael Jackson

as Coach Russo in The Amazing World of Gumball (2001-2009)

Bill Farmer

as Rocky in The Amazing World of Gumball (2001-2009)

Bill Fagerbakke

as Mr. Small in The Amazing World of Gumball (2001-2009)