!!Lulu Moppet
* CheerfulChild
* DreamSequence: Lulu had oodles of these in some of the 40's cartoons.
* GenkiGirl
* HotBlooded
* JerkWithAHeartOfGold: Lulu can be considered this to some.
* MeaningfulName: Lulu's last name is "Moppet", to reflect the fact that she's a moppet most of the time.
* RegalRinglets: Despite being from a middle-class family.
* VitriolicBestBuds: With Tubby, Type 2

!!Tubby "Thomas" Tompkins
* {{Adorkable}}
* AlliterativeName
* BigEater
* BigThinShortTrio: With Wilbur and Iggy in the anime.
* BreakoutCharacter: After the first few comics were published, Tubby later began appearing in his own solo comic stories, as well as his own short-lived comic series.
* ButtMonkey: Occasionally fell into this trope.
* CrouchingMoronHiddenBadass
* DeadpanSnarker
* DoggedNiceGuy: To Gloria, in the original comics and the TV series.
* DreadfulMusician: With the violin, being incredibly bad at it.
* FatBestFriend
* HenpeckedHusband: In the short "Beau ties", Tubby dreams he is married to a terrifying henpecking Lulu shouting "GET TO WORK"! every second
* JerkWithAHeartOfGold: Tubby actually shows shades of this occasionally. Especially in the original comics and the anime.
* KidDetective: Nickamed "The Spider"
* LargeHam
* MeaningfulName: It's obvious where Tubby gets his name from.
* NiceHat: The sailor cap that he always wears on his head.
* SiblingRivalry: Not quite siblings, but his diminutive lookalike cousin, Chubby, would also qualify.
* SmallNameBigEgo
* VerbalTic: In the anime, Tubby has a very distinctive chuckle, sounding almost similar to that of [[Film/TheThreeStooges Curly's]] trademark 'nyuck! nyuck!' laughter.
* VitriolicBestBuds: With Lulu, Type 2.

!!Alvin Jones
* AdorablyPrecociousChild: At least in the anime.
* AnnoyingYoungerSibling: Alvin actually has one in the form of his younger brother, Cedric.
* BrattyHalfPint
* {{Keet}}
* TagalongKid

!!Annie Inch
* TwentiesBobHaircut
* TheChick
* GenkiGirl

!!Willy Wilkins, Eddy Stimson, & Iggy Inch
* AlliterativeName: Iggy Inch, Willy Wilkins
* BigThinShortTrio: Iggy, with Tubby and Wilbur, in the anime.
* CharlieBrownBaldness: Iggy has this.
* CheeseEatingSurrenderMonkeys: They occasionally fell into this trope whenever Tubby wanted to face off against the Westside Gang, [[CaptainObvious despite not being French]].
* DemotedToExtra: In the anime, both Willy and Eddy fell into this trope as they did not appear very often. Willy appeared in 9 episodes while Eddy had the least amount of appearances, appearing in only 5 episodes.
* HypercompetentSidekick: Iggy occasionally showed shades of this when paired with Tubby.
* NiceHat: Willy and Eddy both wear these. Willy always has that big poofy cap while Eddy always wears that side-spiked hat.
* TheQuietOne: Eddy doesn't talk quite as much as his companions.
* [[ThoseTwoGuys Those Three Guys]]
* TrueCompanions: They serve as these to Tubby.

!!Wilbur Van Snobbe

* BigThinShortTrio: With Tubby and Iggy in the anime.
* DependingOnTheWriter: In the anime, Wilbur was changed from being snobbish and antagonistic to Lulu and the others to being a good friend who served as {{The Smart Guy}} on some occasions.
* IdleRich
* {{Jerkass}} [=/=] JerkWithAHeartOfGold: In the original comics and the TV series.
* MeaningfulName: [[CaptainObvious Where do you think Wilbur gets his last name from?]]
* RichBitch
* TheRival: To both Lulu and Tubby, in the comics and the TV series.
* SesquipedalianLoquaciousness: Wilbur used this a lot in most of his appearances in the anime.
* SpoiledBrat: And HOW! Not so much in the anime, though.

!!Gloria Darling

* AlphaBitch
* GoldDigger
* {{Tsundere}}