A practical joker and trouble maker Heathcliff struts through life in search of new ways to torment Spike the neighborhood bulldog, or to woo Sonja his beloved fancy feline girlfriend. At home he is bane of Grandpa's existence ,but adored by Grandma and Iggy Nutmeg his human owners. Joined with Heathcliff is The Catillac Cats gang, a band of junkyard cats with there leader Riff-Raff, a short cat with a tall sexy feline girlfriend named Cleo and, a Cadillac car that can change into almost anything. Riff-Raff's get-rich-quick schemes and search for good eats have the rest of the gang Hector, Mungo, and Wordsworth constantly in and out of trouble and adventures.
Title character, he is an orange street smart cat, who spends most of his time trying to turn a dustbin over onto people's heads. Heathcliff is a real street cat who loves to fight anyone but will not fight girls, He will also lie, cheat and steal to get himself some food, but beneath it all, he's a good guy.
Riff-Raff's love interest, most episodes focused around Riff-Raff trying to woo her. She lives in a musical instrument shop with Bush. She had a 1980s-hairstyle and leg warmers.
Wordsworth is a white cat on roller-skates, speaks in rhyme and always wears a yellow Walkman.
Probably the closest thing to a nemesis that Heathcliff has, Spike, a bulldog, is no-where near as clever as Heathcliff—all brawn and no brains. Spike is owned by a neighborhood bully called Muggsy. Heathcliff is quite able to handle both of them when necessary.
Heathcliff's owner who lived with his grandparents. Iggy sometimes takes Heathcliff to strange places and new locations for adventures.
A small girl who lived in the same neighborhood as Iggy's family. Marcy always saw the best in Heathcliff and thought he was a little angel. She also loves to have Heathcliff ride in her baby doll carriage, which for the most part Heathcliff is more than happy to oblige.
The boss, lived in a trashed airplane on top of a junk-pile while using a trapdoor for an exit. He is a small orange cat with a large white cap.
Second-in-command, sometimes wanted to be leader. Insecure. No background on His origin. His colors are brown, beige, and dark brown. Hector wears a headband, beige jumpsuit, and a neck-tie. He mainly drove the convertible Cadillac. Sometimes Wordsworth would drive.
Big, clumsy and not the sharpest tool in the box. He is a large cat with unique purple/blue/grey fur that wears a red sweater and a matching red cap. The name was used to show similarity between him and the character with a similar name from Mel Brooks' Blazing Saddles.
Dressed in a pink hat and a red-and-black striped shirt, Knuckles and his henchman are not really Heathcliff's enemies—more like a group of cats that he constantly annoyed and/or bullied. More often than not they were after him, because he had tried to trick them in some way.
Guard dog who lives in the junkyard with the Catillac Cats.
Heathcliff's love, a fluffy white Persian cat, who wears a pink collar. Heathcliff is always trying to win Sonja over, although generally she is not usually too impressed with Heathcliff's antics as she is a far classier type of cat. Sonja would often date other male cats that Heathcliff would have to fight.
Heathcliff, Heathcliff no one should terrify their neighborhood.
But Heathcliff just won't be undone playing pranks on everyone.
There's a race to be on top the competition doesn't stop.
Mixing it with the ladies man being charming debonair.
The gang will rein supreme and no one can deny.
They'll make some history and always have an alibi.
So join in the jubilee the cats are great, they'll all agree.
You'll find in each calamity the cat's superiority.
Huh, ah oh, oh ah oh, ah uh. Huh oh ah, ah oh, oh ah oh uh uh.
Heathcliff, Heathcliff no one should terrify the neighborhood.
But Heathcliff just won't be undone you should realize he can win it with you!