Jay / Agent J (53 episodes, 1997-2001)
Zed / Chief Zed (52 episodes, 1997-2001)
Wormguy / Additional Voices / Alien / Blblup / Worm Emperor (48 episodes, 1997-2001)
Wormguy / Bob / Brainard / Additional Voices / Stadium Janitor (46 episodes, 1997-2001)
Kay / Agent K (40 episodes, 1998-2001)
Elle / Agent L (38 episodes, 1997-2000)
Jeebs / Jack Jeebs / Dak Jeebs / Vangus (30 episodes, 1997-2001)
Frank the Pug (28 episodes, 1997-2001)
Kay / Agent K (13 episodes, 1997-1998)
Dr. Zan'dozz Zeeltor (12 episodes, 2000-2001)
Elle / Agent L (10 episodes, 1997-2001)
Alpha (9 episodes, 1997-2001)
Agent X (7 episodes, 2000-2001)
Agent D / Alcidian (5 episodes, 1997-1999)
Arquillian Ambassador (4 episodes, 1997-2000)
Kevin Brown / Troy the Symbiote (4 episodes, 1997-1998)
(4 episodes, 1998-2001)
(4 episodes, 2000-2001)
Dung Bug / Edwin Bug / Geen Bug / Moe Bug / Moffat (3 episodes, 1997-1998)
Alcidian / Alien / Psychiatrist (3 episodes, 1997-2000)
(3 episodes, 1997-1998)
Additional Voices (3 episodes, 1998-2001)
(3 episodes, 1998-2000)
Queen Bug (3 episodes, 1999-2000)
Wormguy (2 episodes, 1998)
(2 episodes, 1999-2000)
(2 episodes, 1997-2000)
Alcidian / Police Officer (2 episodes, 1997-1999)
Aileen (2 episodes, 1997-1998)
Buzzard (2 episodes, 1997)
(2 episodes, 1998)
Agent H / Forbus (2 episodes, 1997)
Jack Jeebs (2 episodes, 1997)
Worm Emperor (2 episodes, 1998-2000)
Little Girl / Tara (2 episodes, 2001)
(2 episodes, 2001)
(1 episode, 1997)
(1 episode, 1998)
Quintoon (1 episode, 1999)
Dr. Lupo / Lupo Clone (1 episode, 1998)
Bully / Old Crone (1 episode, 1998)
(1 episode, 1999)
(1 episode, 2000)
Drekk (1 episode, 1999)
Comand Birgill (1 episode, 1999)
Cosmosis / Henry Dribble / Scrawny (1 episode, 2001)
Edie (1 episode, 1998)
(1 episode, 2001)
Prince Rex (1 episode, 2000)
Wormguy (1 episode, 1999)
Short Bug / Truck Driver (1 episode, 1999)
Self (1 episode, 2000)