- Gregg Berger - (voice)
- Eddie Deezen - (voice)
- Elan Garfias - (voice)
- Michael Stanton - Bobby Bill (voice)
- Katherine Helmond - Mildred (voice)
- Matt Letscher - Hunky Man / Ticket Seller / Ref (voice)
- Dave Foley - Agent Rick (voice)
- Sam McMurray - Dad (voice)
- Sam McMurray - Rover (voice)
- Clifton Collins Jr. - Scar / Weasel (voice)
- Richard Lewis - Buddy (voice)
- Luke Perry - Fang (voice)
- Stephen Tobolowsky - Mr. Geekman (voice)
- Carnie Wilson - Computer Voice / Olaf's Singing Voice (voice)
- French Stewart - Zoltron (voice)
- Jeff Corwin - Cap Wilder (voice)
- Gavin MacLeod - Captain Gumble (voice)
- Hunter Parrish - Tundra (voice)
- Ted Biaselli - Cuddlesworth / Foo Foo (voice)
- Ted Biaselli - One Eye (voice)
- Ted Biaselli - Cuddlesworth (voice)
- James Remar - Sarge (voice)
- Paul Willson - Mr. Biggles (voice)
- Gary Cole - Slick (voice)
- Dabney Coleman - Mayor (voice)
- Georgina Cordova - Corky (voice)
- Rachel Crane - Tabitha (voice)
- Rachel Crane - Ann (voice)
- Rachel Crane - Muff Muff / Frannie (voice)
- George Takei - Mr. Julius (voice)
- George Takei - Mr. Julius / Monsieur Mitch (voice)
- Jim Parsons - Milton Feltwaddle (voice)
- Ellen Greene - Gertrude Washburn (voice)
- Justin Shenkarow - Freckle Faced Kid / Dragon Mascot (voice)
- Justin Shenkarow - Freddie (voice)
- Justin Shenkarow - Chief (voice)
- Dave Thomas - Agent Todd (voice)
- Charles Shaughnessy - Ralston (voice)
- Charles Shaughnessy - Bingo (voice)
- John J. York - Buford (voice)
- John J. York - Harry / Passenger #2 (voice)
- John J. York - Brutus / Bus Driver (voice)
- Mary Gross - Mrs. Beasley (voice)
- Kevin Michael Richardson - Sven / Race Official (voice)
- Kevin Michael Richardson - Mangy Dog #1 / Great Dane / TV Announcer (voice)
- Kevin Michael Richardson - Saint Bernard (voice)
- Kevin Michael Richardson - Ringbinder / Bumbles / Announcer (voice)
- Kevin Michael Richardson - Ward / Mr. Grubo (voice)
- Kevin Michael Richardson - Principal Delfuego (voice)
- Kevin Michael Richardson - Sid / Chubba / Sven (voice)
- Kevin Michael Richardson - The Crushinator (voice)
- Myles Jeffrey - Teen Boy #1 / Announcer #2 (voice)
- Frank Welker - Napoleon / Pink Parrot / Security Guard (voice)
- Frank Welker - Dad / Lackey (voice)
- Tim Conway - Wally Banks (voice)
- Dom Irrera - Princess (voice)
- J.K. Simmons - Lt. Rock (voice)
- J.K. Simmons - Mr. Withers (voice)
- Tom Kenny - Bobo / Chauncey / Dad Gardener (voice)
- Tom Kenny - Chuckles / Dogcatcher (voice)
- Wayne Knight - Ralphie / Construction Worker #1 (voice)
- Maurice LaMarche - Jean Luc Glaciaire (voice)
- Maurice LaMarche - Agent Francois / Hench / Grocer (voice)
- Maurice LaMarche - Agent Francois (voice)
- Clancy Brown - Salty (voice)
- Clancy Brown - Stain / Alley Dog #2 / Security Guard (voice)
- Clancy Brown - Sterling Von Oxnard (voice)
- Clancy Brown - Billy Ray / Rocky (voice)
- Clancy Brown - Bert / Dad / Bad Guy (voice)
- John Larroquette - Mayor (voice)
- Danny Cooksey - Chip / Biker (voice)
- Danny Cooksey - Joey Wald (voice)
- Danny Cooksey - Humphrey (voice)
- Danny Cooksey - Teen Boy #2 / Volleyball Player (voice)
- Danny Cooksey - Chubby Puppy / Security Guard (voice)
- Danny Cooksey - Chucky (voice)
- Ashley Johnson - Amelia (voice)
- Ashley Johnson - Gina (voice)
- Ashley Johnson - Toyo (voice)
- Ashley Johnson - Giblet / Kid #1 (voice)
- Kath Soucie - Woman Reporter (voice)
- Kath Soucie - Molly / Woman / TV Reporter (voice)
- Kath Soucie - Trixie / Babette (voice)
- Kath Soucie - Simon / Jilly / TV Reporter (voice)
- Kath Soucie - Greasy / Passenger #1 / Yorkie #1 (voice)
- Kath Soucie - Boots / Mrs. Vanvoorhees (voice)
- Kath Soucie - Emily's Mom / Little Girl #2
- Kath Soucie - Jennifer / Millard's Mom / Dot's Mom (voice)
- Kath Soucie - Ginger / Mom / Girl (voice)
- Kath Soucie - Flip / Blip / Sexy Woman (voice)
- Kath Soucie - Dot's Mom / Molly / Kay (voice)
- Kath Soucie - Kid / Little Girl / Mom (voice)
- Kath Soucie - Gail / Checkers / Winnie (voice)
- Kath Soucie - Dot's Mom (voice)
- Elizabeth Daily - Dolly (voice)
- Elizabeth Daily - Babs / Dimples (voice)
- Elizabeth Daily - Pooches / Mom / Boy (voice)
- Elizabeth Daily - Mittens (voice)
- Elizabeth Daily - Scout / Taffy (voice)
- Elizabeth Daily - Angela / Dolly (voice)
- Elizabeth Daily - Dolly / Bart (voice)
- Elizabeth Daily - Mom / Daughter (voice)
- Elizabeth Daily - Whip / Tip / Reporter (voice)
- Elizabeth Daily - Clover / Mom Wald (voice)
- Elizabeth Daily - Dolly / Mom / Puppy 1 (voice)
- Elizabeth Daily - Twiggy / Dolly (voice)
- Elizabeth Daily - Dolly / Pupster / Female Guard Dog #2 (voice)
- Elizabeth Daily - Dolly / Tipper (voice)
- Elizabeth Daily - Daphne / Mom (voice)
- Elizabeth Daily - Ian (voice)
- Elizabeth Daily - Mom / Little Girl (voice)
- Elizabeth Daily - Dolly / Wendy / Athletic Mom (voice)
- Elizabeth Daily - Madison / Vanilli / Jenny (voice)
- Tress MacNeille - FKD Robotic Voice / Mrs. Purdy / Woman Fire Chief (voice)
- Tress MacNeille - Inspector Prunepants / Molly's Mom (voice)
- Tress MacNeille - City Council Woman (voice)
- Tress MacNeille - Tommy's Mom / Alley Dog #1 / FKD (voice)
- Tress MacNeille - Miss Stiffwhiskers / FKD (voice)
- Tress MacNeille - Pickypuss / Matron / Groomer #1 (voice)
- Tress MacNeille - Madame Pickypuss (voice)
- Tress MacNeille - Millicent / Puss Puss Galore (voice)
- Tress MacNeille - FKD / Butters (voice)
- Tress MacNeille - Librarian / Restaurant Guest (voice)
- Tara Strong - Lily / Woman / Little Girl (voice)
- Tara Strong - Zipper (voice)
- Tara Strong - Bubbles / Zipper (voice)
- Tara Strong - Madeline / Eve / Mom Gardener (voice)
- Tara Strong - Carlyle / Chucky's Mother (voice)
- Tara Strong - Mia / Sharon (voice)
- Tara Strong - Julie (voice)
- Tara Strong - Dolores / Old Person (voice)
- Tara Strong - Becky (voice)
- Rob Paulsen - Pet Delivery Guy / Cop (voice)
- Rob Paulsen - Yakov / Male British Voice (voice)
- Rob Paulsen - Suds (voice)
- Maria Canals-Barrera - Dr. Trudy (voice)
- Glenne Headly - Miss Petunia (voice)
- Pamela Adlon - Taboo (voice)
- Pamela Adlon - Gwen (voice)
- Pamela Adlon - Mia's Mom (voice)
- Pamela Adlon - Chocko / Gizmo (voice)
- Pamela Adlon - Benji / Officer Meyer (voice)
- Pamela Adlon - Henry / Toddler / Kids' Mom (voice)
- Pamela Adlon - Seymor (voice)
- Diedrich Bader - Banjo Player / Worker (voice)
- Diedrich Bader - Champ / Shopkeeper (voice)
- Anndi McAfee - Ruby (voice)
- Anndi McAfee - Cheryl / Karen / Toddler (voice)
- Anndi McAfee - Missy / Annie (voice)
- Anndi McAfee - Miffy / Tiffy (voice)
- Anndi McAfee - Piper / Baby (voice)
- Lauren Tom - Pippy / Amy / Show Host (voice)
- Lauren Tom - Emily / FKD (voice)
- Lauren Tom - Dinky / Agent Ping (voice)
- Lauren Tom - Agent Ping / Wendy's Mom (voice)
- Lauren Tom - Agent Ping / FKD (voice)
- Lauren Tom - Mom / Jessie (voice)
- Lauren Tom - Agent Ping (voice)
- Jennifer Carpenter - Pepper (voice)
- Jeff Bennett - Claudio / Crew Man #1 / Yorkie #2 (voice)
- Jeff Bennett - Howie / Soda Jerk / Netter (voice)
- Jeff Bennett - Bondo / Agent Mugs / Svetlana's Dad (voice)
- Jeff Bennett - Claudio (voice)
- Jeff Bennett - Agent Mugs / Hiker / Employee (voice)
- Jeff Bennett - Claudio / Farmer Frank (voice)
- Jeff Bennett - Mongo (voice)
- Jeff Bennett - Lone Hero / Dad Wald (voice)
- Jeff Bennett - Slacker / Sammy Kegelman (voice)
- Jeff Bennett - Eugene / RJ / Reporter #3 (voice)
- Jeff Bennett - Dad / Agent Gus / Sir Winston Windmill (voice)
- Jeff Bennett - Claudio / Osbourne Darkcoffin (voice)
- Jeff Bennett - Claudio / Quartet Leader / Bus Driver (voice)
- Jeff Bennett - Claudio / Merv Michaels (voice)
- Jeff Bennett - Schleppy (voice)
- Jeff Bennett - Bernie / Pike / Bumper (voice)
- Jeff Bennett - Bachelor Bill / Waiter / Rich Guy (voice)
- Jeff Bennett - Mortimer / Senator Foster / Mr. Taco (voice)
- Jess Harnell - Announcer / Official (voice)
- Jess Harnell - Bony Doggins / Fast Boy (voice)
- Jess Harnell - Dot's Dad / Stranger (voice)
- Jess Harnell - Caveman Dad / Dot's Dad / Walter (voice)
- Cree Summer - Cupcake (voice)
- Cree Summer - Sumalee (voice)
- Cree Summer - Cupcake / Tony (voice)
- Cree Summer - Frisky (voice)
- Cree Summer - Cupcake / Crowd Member #2 (voice)
- Cree Summer - Izzy (voice)
- Cree Summer - Billy / Nougat / Penny (voice)
- Cree Summer - Cupcake / Runt (voice)
- Cree Summer - Winnie / Spotty (voice)
- Cree Summer - Cupcake / Lead Alley Cat (voice)
- Cree Summer - Cupcake / Mom (voice)
- Cree Summer - Cupcake / Katy's Mom (voice)
- Cree Summer - Cupcake / Automated Voice (voice)
- Cree Summer - Mangy Cat #1 / Allyson's Mon / Cat #1 (voice)
- Cree Summer - Cupcake / Reporter #1 / Theme Song Singer (voice)
- Cree Summer - Trudy / Isabelle (voice)
- Pamela Hayden - Female Voice / Toddler's Mom (voice)
- Pamela Hayden - Toddler's Mom (voice)
- Tammy Trull - Little Girl #1 (voice)
- Tammy Trull - Sarah (voice)
- Corey Burton - Alien Leader / Dr. Sculder (voice)
- Corey Burton - Mr. Balk / Mr. Thatcher (voice)
- Corey Burton - Dr. Cooper (voice)
- Corey Burton - Shagface (voice)
- Corey Burton - Dash Whippet / Athletic Dad / Sergeant Dog (voice)
- Corey Burton - Dash Whippet / Al (voice)
- Corey Burton - Gary / Darren / TV Announcer Dude (voice)
- Fred Stoller - Ralph (voice)
- Jessica DiCicco - Patches (voice)
- Jessica DiCicco - Patches / Cell Bone (voice)
- Jessica DiCicco - Kippy (voice)
- Jessica DiCicco - Patches / Kelly (voice)
- Jessica DiCicco - Patches / Suzanne / Teensy (voice)
- Jessica DiCicco - Patches / Schoolgirl (voice)
- Jessica DiCicco - JD / Girl / Second Woman (voice)
- Jessica DiCicco - Tommy / Allyson / Sweetie (voice)
- Jessica DiCicco - Sweet Pea / Vladibulbanian Girl (voice)
- Jeannie Elias - Millie (voice)
- Jeannie Elias - Leo / Mrs. Parker (voice)
- Grey DeLisle - Shaggles / Dot (voice)
- Grey DeLisle - Dot (voice)
- Grey DeLisle - Yo Yo (voice)
- Grey DeLisle - Teen Boy's Mom / Tabitha (voice)
- Grey DeLisle - Dot / Pugford (voice)
- Grey DeLisle - Katy / Pet Owner (voice)
- Grey DeLisle - Buttercup / Mrs. Wyszikowski / TV Jingle (voice)
- Grey DeLisle - Puddles / Lillian (voice)
- Grey DeLisle - Axel / Mom / Ponytail Girl (voice)
- Grey DeLisle - Millard / Dot (voice)
- Lucas Grabeel - Percy (voice)
- Lucas Grabeel - Hairy (voice)
- Lucas Grabeel - Jackpot / Little Boy #2 (voice)
- Carlos Alazraqui - Peppy / Cat #2 (voice)
- Carlos Alazraqui - Solo (voice)
- Carlos Alazraqui - Antonio / Venezuelan Agent Dog #2 (voice)
- Carlos Alazraqui - Stuffy (voice)
- Phil LaMarr - President Bigman / Copter Pilot (voice)
- Phil LaMarr - Steven / Doc (voice)
- Gary Anthony Williams - Mr. Shattner / Stage Hand (voice)
- Gary Anthony Williams - Mangy Cat #2 / Mangy Dog #2 / Hungry Dog (voice)
- Mo Collins - Jen (voice)
- Mo Collins - Lenore / Pat (voice)
- Hynden Walch - Noodles / Mrs. Bower (voice)
- Margaret Cho - Mrs. Wattana (voice)
- Betty White - Agatha McLeish (voice)
- Paul Germain
- Joe Ansolabehere
- Daniel Ingram
Stephen Tobolowsky hace el papel de Mr. Geekman (voice).
Wayne Knight interpreta a Ralphie / Construction Worker #1 (voice) en la serie.
Katherine Helmond interpreta a Mildred (voice) en la serie.
Danny Cooksey hace el papel de Joey Wald (voice).
James Remar interpreta a Sarge (voice) en la serie.
George Takei interpreta a Mr. Julius / Monsieur Mitch (voice) en la serie.
Eric McCormack interpreta a Lucky (voice) en la serie.
René Auberjonois interpreta a McLeish (voice) en la serie.
Yvette Nicole Brown interpreta a Cookie (voice) en la serie.
John DiMaggio interpreta a Niblet (voice) en la serie.
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