This is Pinkie Pie:
And these are the heroes who are similar to her:
Dee Dee (Dexter's Laboratory)
Sheen Estevez (Jimmy Neutron)
Kuki Sanban/N.U.M.B.U.H. 3 (Kids Next Door)
Sailor Mini Moon (Sailor Moon)
Bubbles (PowerPuff Girls)
Lucy Wilde (Despicable Me)
Babs Bunny (Tiny Toon Adventures)
Pinky (Animainiacs/Pinky & the Brain)
Minnie Mouse (Mickey & Friends)
Michelangelo (Teenage Mutant Ninja Turtles)
Barney Rubble (The Flintstones)
Norville "Shaggy" Rogers (Scooby-Doo)
Amy Rose (Sonic the Hedgehog)
Mai Shiranui (King of Fighters)
Jett (Beverly Hills Teens)
Percy (Thomas the Tank Engine & Friends)
Strawberry Shortcake (Strawberry Shortcake)
Red Fraggle (Fraggle Rock)
Wembley Fraggle (Fraggle Rock)
SpongeBob SquarePants (SpongeBob SquarePants)
Anastasia Tremaine (Cinderella)
Charlotte La Bouff (Princess & the Frog)
Bugs Bunny (Looney Tunes)
RoadRunner (Looney Tunes)
Vanellope von Schweets (Wreck-it Ralph)
Cowardly Lion (Wizard of Oz)
Chika Fujiwara (Kaguya: Love is War)