<Li> Rolly (voiced by Sam Lavagnino) is a fawn pug 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 purple cat . In some episodes, she ends up going along with Bingo and Rolly on their missions . These episodes are: "A Pyramid Scheme", "Hissy's Big Day", "Bob Loves Mona", "Puzzling Pugs", "A Seat at the Theatre", 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>

Who does the voice of hissy on puppy dog pals