He also has a witty and sharp sense of humor compared to the other characters in the series, which is also backed up by his goofy Eddie Murphy-styled laugh.
In the TV special, he has a crush on Violet Vanderfeller and has a record of 762 escapes (which Cooler refers as "A nasty habit I'm trying to quit").
In Pound Puppies and the Legend of Big Paw, she wears a pink dress and is somewhat like Cooler's girlfriend (as she is in Season 1 of the TV series).
In the season 1 episode "In Pups We Trust", Howler is accused of stealing the Pound Puppies beloved items.
In Pound Puppies and the Legend of Big Paw, Howler is voiced by Hal Rayle and his howling vocal effects are provided by Frank Welker.
She is voiced by Nancy Cartwright impersonating Mae Questel in the TV series and in Pound Puppies and the Legend of Big Paw.
In the season 2 episode "The Wonderful World of Whopper", he helps a puppy named Beezer snap out of her boredom with the power of his imagination.
In the present day storyline of Pound Puppies and the Legend of Big Paw, he is an adult and shares the Bone of Scone story when he is a kid with his niece and nephew.
Biff Barker (Basset Hound) – Whopper's hero, he works in a TV show that is about ghost-catching, but in real life, however, he is a coward.
While pregnant, she has a terrible craving for a dog food and ice cream sundae (with chocolate syrup, Limburger cheese, ketchup, gumdrops, etc.).
Itchy and Snichey (Doberman Pinchers) – Nabbit's two guard dogs who appear in the Pound Puppies TV special.
At the end of Pound Puppies and the Legend of Big Paw, he is adopted by the museum in order to keep the Bone of Scone from falling into the wrong hands.
She and Whopper are kidnapped by Bones and Lumpy and are turned into guard dogs by Marvin McNasty's Mean Machine.
Schap (Saint Bernard) – a dog who serves as a hospital helper to the Pound Puppies when Cheep-Cheep, a bird rescued by Bright Eyes, gets injured.
Byron P. Fleabottom is a small Aidi and his partners are Fleeco, a tall, lanky Beagle-Harrier, and Wolfie, a round Bearded Collie who only honks his nose and has a crush on Bright Eyes.
When he and Biff Barker finds out that the Terrible Terrier is not real and learns about Katrina's plan, they rescue the Pound Puppies from being turned into fur coats.
Clawfinger (Bulldog) – a criminal mastermind who wants to kidnap Pupnick and other dogs to hypnotize them under his control with a brain crystal encased in Pupnik's collar.
Scratchy (Welsh Terrier) – a puppy whom Nose Marie asks Jerry to give a flea bath in "Kid in the Doghouse".
He steals half of the bone of scone and invents the Mean Machine to turn puppies into vicious guard dogs.
Ironically, at the end of the film, after the bone of scone is back together, he and his henchmen are reformed by his own machine and helps Tammy and Jeff at the adoption bazaar.
At the end of the TV special, he is mistaken for capturing Flack and Tubbs and gets his original job back at the pound supervisor.
Sam Quintin – a jewelry thief hired by Katrina in her plot to close Holly's puppy pound.
He fools Holly and the Pound Puppies into thinking that he is a movie director and tricks Bright eyes into stealing the jewels.
However, when a life-time supply of dog food is shipped along with a puppy delivered to Sarah, Chief Williams changed his mind.
Chief Williams often wondered about Mayor Fist's strange behavior when he is called in the middle of the night about a high-speed chase involving Bigelow.
He is last seen arresting Flack and Tubbs for grand theft dog-napping in seven states at the end of the Pound Puppies TV special.
Later, they find out that it is Catgut and his friends who did it (caught on camera) and tell Katrina that her plans of making a condominium on top of Holly's property has been denied.
Mr. Phil Vandefeller and Mrs. Gloria Vanderfeller have a son and a daughter named Nathan, a brown-haired boy with a green tie and his little sister, Chelsea, a blond, curly-haired girl with a pink bow.
Red Alert Pup – a talking alarm system at the Pound Puppy HQ who usually reports emergencies and news in Season 2 of the TV series.
The Pound Puppies are able to stop Robotic Rover by bumping into Brattina, causing her to drop the remote control in the punch bowl.