Dr. Girlfriend / Henchman 21 (voice) (81 Episodes)

Hank Venture / The Monarch (voice) (81 Episodes)

Brock Samson (voice) (81 Episodes)

Dr. Venture (voice) (81 Episodes)

Dean Venture (voice) (81 Episodes)

Dr. Orpheus (voice) (31 Episodes)

Triana Orpheus (voice) (14 Episodes)

Sirena (voice) (6 Episodes)

Dr. Jonas Venture (voice) (4 Episodes)

Action Johnny (voice) (2 Episodes)

The Alchemist (voice) (2 Episodes)

Jefferson Twilight (voice) (2 Episodes)

Professor Impossible / Phage (voice) (1 Episodes)

General Treister (voice) (2 Episodes)

The Master (voice) (2 Episodes)

Professor Impossible (voice) (2 Episodes)

Captain Sunshine (voice) (2 Episodes)

Wonderboy (voice) (1 Episodes)

Brown Widow (voice) (1 Episodes)

Lance Hale / Mrs. Z (voice) (1 Episodes)

Mike Sorayama (voice) (1 Episodes)

Dale Hale (voice) (1 Episodes)

Marsha Backwood (voice) (1 Episodes)