Character Name : (voices)

Original Name : Casey Kasem

Gender : Male

Character Name : Buttercup (Voice)

Original Name : E. G. Daily

Gender : Female

Character Name : Little Suzy (Voice)

Original Name : Mae Whitman

Gender : Female

Character Name : Bubbles (Voice)

Original Name : Tara Strong

Gender : Female

Character Name : Jhonny Bravo (Voice)

Original Name : Jeff Bennett

Gender : Male

Character Name : Blossom (Voice)

Original Name : Cathy Cavadini

Gender : Female

Character Name : Dexter (Voice)

Original Name : Christine Cavanaugh

Gender : Female

Character Name : I.R. Baboon (Voice) / Cow (Voice) / Chicken (Voice) / Red Guy (Voice)

Original Name : Charlie Adler

Gender : Male

Character Name : Billy (Voice)

Original Name : Richard Steven Horvitz

Gender : Male

Character Name : Mandy (Voice)

Original Name : Grey DeLisle

Gender : Female

Character Name : Bunny Bravo (Voice)

Original Name : Brenda Vaccaro

Gender : Female

Character Name : The Grim Reaper (Voice)

Original Name : Greg Eagles

Gender : Male

Character Name : Professor Utonium (Voice)

Original Name : Tom Kane

Gender : Male

Character Name : The Mayor (Voice)

Original Name : Tom Kenny

Gender : Male

Character Name : I.R. Baboon

Original Name : Charlie Adler

Gender : Male

Character Name : I.M. Weasel (Voice)

Original Name : Michael Dorn

Gender : Male

Character Name : Courage (Voice)

Original Name : Marty Grabstein

Gender : Male

Character Name : Muriel Bagge

Original Name : Thea White

Gender : Female

Character Name : Muriel Bagge (Voice)

Original Name : Thea White

Gender : Female

Character Name : Dee Dee (voice)

Original Name : Allison Moore

Gender : Female

Character Name : (voices)

Original Name : Frank Welker

Gender : Male

Character Name : (voice)

Original Name : Mindy Cohn

Gender : Female

Character Name : (voice)

Original Name : Jim Cummings

Gender : Male

Character Name : (voices)

Original Name : Mark Hamill

Gender : Male

Character Name : (voice)

Original Name : William Hanna

Gender : Male

Character Name : (voice)

Original Name : Joseph Barbera

Gender : Male

Character Name : (archive footage)

Original Name : Ted Turner

Gender : Male

Character Name : (archive footage)

Original Name : Don Messick

Gender : Male