My favorite tomboys in cartoons:
Francine(Arthur) - Arthur's friend who's definetly a tomboy monkey who's rough,loud,& bossy and deals with her sister(who's pretty attractive)all the time.
Helga(Hey!Arnold) - Minus the girly dress,she's so a tomboy who loves rough sports & who's a mean rough tough jerk on everyone & has a crush on Arnold.
Toph(Avatar) - She's cute & tough who's the best kickbutt Earthbender in the world.
Buttercup(Powerpuff Girls/PPG Z) - She's rough & tough & loves to open up a can of whoopbutt on the badguys and doesn't like feminine stuff.
Lor(The Weekenders) - One of Tino's friends who's a tomboy who's good at sports and has to deal with alot of her brothers

:sweat:.
Nikki(6teen) - Emo Asian tomboy who acts mean/tough,picks on the poor Clone Girls & has a crush on Jonesy,hahahahahaha

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Eva(Total Drama Island) - She's a big tough tomboy who's a bodybuilder with a ferocious temper.
Virginia(Venture Bros.) - She's one tough tomboy who's Dr.Quymn's bodyguard and a tough macho manly woman at that who's Brock Samson's worthy rival.
Ryuunosuke(Urusei Yatsura) - A tomboyish girl who mostly dresses in guyish clothing & always fights with her dumb father

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Ukyo(Ranma 1/2) - She's a tomboy who dresses in guys clothes in school & is a good fighter chef at that.
Kanna(Sakura Wars) - A tomboyish woman who loves to pick fights & her bickerings with the rich brat Sumire are hilarious

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Maki(Air Master) - Ex-gymnast turned streetfighter who loves to fight powerful opponents which she's a tomboy who always dresses in boyish clothes during the series.
Tatsuki(Bleach) - Orihime's tomboyish friend who's awesome who dresses in boyish clothes(except her school uniform)& wants to protect Orihime from Hollows & crazy lesbian perverts like Chizuru who gets beat up by her all the time which was hilarious

.
Zoey(Pokemon Diamond/Pearl) - Dawn's best friend & rival who competes in the contents like Dawn who helps her out when needed which she's definetly a tomboy which her new costumes are interesting as well.
Yunbo(Fighting Beauty Wulong) - Big blonde tough heavy tomboy wrestler who's so strong & powerful gave poor Mao Lan a beating

& she wears boys' clothes all time which big tough heavy tomboys are so powerful & interesting

when I first watched the series.