Marmaduke (voice)
Mazie (voice)
Carlos (voice)
Barbara Winslow
Brian Winslow
Raisin (voice)
Giuseppe (voice)
Jezebel (voice)
Bosco (voice)
Phil Winslow
Debbie Winslow
Thunder (voice)
Lightning (voice)
Chupadogra (voice)
Don Twombly
Anton Harrison
Bodie
Drama Trainer
Drama Dog #2 (voice)
Bandana Dog (voice)
Male Executive
Female Executive
Brunette Girl
3rd OC Girl
Jock
Man on Bench
Buff Owner
Basketball Captain
Emergency Road Worker
Lead Fireman
Fireman
Afghan #1 (voice)
Sweater Dog (voice)
Afghan #2 (voice)
Drama Dog #1 / Shroom Dog #2 / Golden Dog / Cocker Spaniel (voice)
Delinquent Dog (voice)
Purse Dog #1 (voice)
Purse Dog #2 (voice)
Purse Dog #3 (voice)
Dalmatian (voice)
Party Dog #1 (voice)
Surfing Award Dog / Beach Dog #4 (voice)
Doberman / Shasta (voice)
Beach Dog #2 (voice)
Beach Dog #3 (voice)