Heathcliff started out as a comic strip series before leaping to the TV screen. He is proclaimed the terror of the neighborhood, and no man, child, milkman, or dog (except for sometimes Spike), would dare cross him.
Tropes associated with Heathcliff:
- Big Eater: So much of one that Garfield would hide his head in shame.
- Cassandra Truth: Heathcliff would occasionally be accused of crimes that were done by another cat or dog. Everyone in town believes he's the criminal, so Heathcliff has to clear his name.
- The Dreaded: Most of the neighborhood cats and dogs fear Heathcliff. And their fears are pretty much justified considering he could beat up scores of them at once.
- Evil Laugh: Well, more like a weird sort of Evil Chortle. Mel Blanc definitely made it distinct.
- Invincible Hero: Heathcliff pretty much goes undefeated throughout the series. The only loss he suffers is to Tammy and even then that's because he refuses to fight her on account of her being a girl. The only cats who could put up a prolonged fight against Heathcliff were the Siamese Twins and even then it was basically a two-on-one catfight.
- Mel Blanc: Heathcliff was his last new character.
- Pint-Sized Powerhouse: He's able to beat up multiple cats and dogs more than twice his size.
- Real Men Wear Pink: Is often happy to let Marcy dress him as a baby and push him around in her baby carriage.
- Trademark Favorite Food: Loves his fish.
- Wouldn't Hit a Girl: In the episode "Terrible Tammy" Heathcliff can't bring himself to sock out Tammy, a cat who's equally as troublesome as he is. His girlfriend Sonja does it for him.
Tropes associated with Sonja:
- Hair Decorations: Wears a pink bow on the top of her head.
- Humanoid Female Animal: Averted in her case; she's the same height as Heathcliff and doesn't have any humanlike features that he doesn't.
A musclebound bulldog owned by the local bully, and Heathcliff's favorite target. Thanks to being beaten up so often, he's actually terrified of Heathcliff, but tries to put up a tough front to support his image.
Tropes associated with Spike:
- Bullying a Dragon: Despite his fear, he still frequently attempted to intimidate or attack Heathcliff. Usually, this backfired.
The Catillac Cats
The leader of the junkyard gang, The Catillac Cats (originally "The Cadillac Cats". The spelling was changed to avoid copyright issues with the Cadillac car company). Although he's short, he's just as tough as any other big cat, much like Heathcliff. He often plans schemes to get his hands on food or money. He is rarely successful however. Most of his schemes are just ways to please his girlfriend Cleo.
Tropes associated with Riff Raff:
- Cats Are Mean: In his worst moments.
- Conservation of Competence: Hector, Wordsworth, and Mungo either don't know, or don't care to admit that they really do need Riff Raff as their leader. He's the only one in the group that does seem to have brains. The plot of "Hector's Takeover" is built around this.
- Last-Second Word Swap: From the episode "Cleo Moves In": Riff Raff is setting his place up for Cleo and mumbles to himself: "It would be nice having her here. I wouldn't have to go chasing her down for...intelligent conversation".
- Mock Millionaire: He does this to impress his mother in "Riff Raff's Mom".
- The Napoleon: Riff Raff was much shorter than the rest of his gang. Though he took it better than most Napoleons, his gang members often pissed him off.
- Nice Hat: Riff Raff isn't Riff Raff without that big baseball cap.
- Ugly Guy, Hot Girlfriend: Riff Raff is by no means unappealing, but you'd wonder why someone like Cleo would ever even notice Riff Raff. In fact, in a flashback episode showing when the two first met, Cleo doesn't seem to give him a second thought until her then-boyfriend starts beating him up for no good reason.
Riff Raff's classy girlfriend, who lives in a music store.
Tropes associated with Cleo:
- Action Girl: She can be one, as in "Who's Got the Chocolate?", where she both masterminds and participates in a plan to rescue Riff Raff after he's kidnapped by canine gangsters. However, this aspect of her is very much Depending on the Writer.
- '80s Hair
- Furry Fandom: Yet another 80s gateway into the fandom.
- Getting Crap Past the Radar: She pulled this off a lot.
- Humanoid Female Animal: She's a cat who stands upright and has blonde hair, plus the breasts (or something that looks like them) and figure of a human woman.
- Nothing Exciting Ever Happens Here: She says this in "Cat Balloon".
- She's not afraid to let Riff Raff know whenever she's getting bored with hanging around the city or the junkyard, which easily kicks off several of their misadventures.
- Sexy Cat Person: For a humanoid cat, she has quite the attractive body. Especially the hair, the hourglass figure, and the eyes!
- Well, Excuse Me, Princess!: She uses this to try and keep Riff Raff's ego in check. Sometimes it actually works... to a point.
The defacto leader of the íThree Amigos! (at least, in his own mind), Hector thinks he's smarter, stronger and braver than he really is. His particular brand of Zany Schemes usually revolve around his own personal gain — and naturally backfire spectacularly.
Tropes associated with Hector:
- Bullying a Dragon: When in Heathcliff's neighborhood, he likes teasing and goading him despite getting his tail handed back to him several times.
- Can't Get Away with Nuthin'
- Jerk with a Heart of Gold/Jerk with a Heart of Jerk
- The Lancer
- Miles Gloriosus: While Riff Raff could sometimes get away with it, Hector was far more often proven a Dirty Coward.
- Small Name, Big Ego
- The Starscream: Particularly in "Hector's Takeover", where he tries to depose Riff Raff as leader. It doesn't go well. In "Lard Times," he outrights states that it was his goal to take over Heathcliff's territory.
- Tempting Fate: No matter how many times things blow up in his face, he continues to prove himself an unintentional master of this.
The strongest, gentlest and dimmest of the Catillac Cats, Mungo tends to go along with whatever his friends are doing.
Tropes associated with Mungo:
- Beware the Nice Ones: If it sinks in that you're actually threatening him or his friends...
- The Big Guy
- Does Not Know His Own Strength
- Dumb Muscle
- Gentle Giant: A prime example. He holds no ill feelings towards his enemies or his friends when they insult him, and injures caused by him are unintentional.
- Simpleton Voice
A laidback inventor and amateur poet who usually tries to speak in rhymes. No matter how forced it gets at times.
Tropes associated with Wordsworth:
- Gadgeteer Genius
- The One Who Wears Shoes: In his case, they're roller skates.
- Rhymes on a Dime: Sometimes speaks normally; the longer his line, the higher the chances of attempting to rhyme.
- The Smart Guy
A junkyard dog who'd like nothing more than to drive those darn cats away once and for all! However, circumstances sometimes force him to team up with them in order to defend their home.
Tropes associated with Leroy:
Another pet at the music store where Cleo lives. Wasn't very fond of Riff Raff and the others.
Tropes associated with Bush: