<Ul> <Li> Bingo (voiced by Issac Ryan Brown) is a black 1 - year - old dog with a blue collar . He is the leader of the two and is Rolly's older brother . </Li> <Li> Rolly (voiced by Sam Lavagnino) is a light brown 1 - year - old pup with a red collar . He isn't as smart as Bingo, and is very silly . He is Bingo's younger brother . In "Bob Loves Mona", he starts a bad habit of chewing everything he can find . </Li> <Li> Bob (voiced by Harland Williams) is the owner of Bingo, Rolly, Hissy, and A.R.F. He works as an inventor . </Li> <Li> Hissy (voiced by Jessica DiCicco) is a sarcastic 1 - year - old purple cat . In some episodes, she ends up going along with Bingo and Rolly on their missions . These episodes are: "A Pyramaid Scheme", "Hissy's Big Day", "Bob Loves Mona, "Puzzling Pugs", "A Seat at the Theatre", and "Return to the Pumpkin Patch", but only Collared up on Puzzling Pugs and Return to the Pumpkin Patch . She is the first and currently only female character to sing . </Li> <Li> A.R.F. (fully known as Auto - Doggy Robotic Friend; voiced by Tom Kenny) is a robotic dog that Bob invented . He first appears in the episode "A.R.F.". Later in the series, he is updated by Bob in "Go, Dog, Go!" </Li> </Ul> <Li> Bingo (voiced by Issac Ryan Brown) is a black 1 - year - old dog with a blue collar . He is the leader of the two and is Rolly's older brother . </Li> <Li> Rolly (voiced by Sam Lavagnino) is a light brown 1 - year - old pup with a red collar . He isn't as smart as Bingo, and is very silly . He is Bingo's younger brother . In "Bob Loves Mona", he starts a bad habit of chewing everything he can find . </Li> <Li> Bob (voiced by Harland Williams) is the owner of Bingo, Rolly, Hissy, and A.R.F. He works as an inventor . </Li>

Who plays the brown dog in secret life of pets