I'll probably list two characters for some or all the movies, if there's a movie missing it's because I haven't seen it.
Snow White and The Seven Dwarfs - Evil Queen/Peddler Woman
Pinocchio - Figaro and Monstro
Fantasia - Chernabog
Dumbo - Dumbo (Mr. Stork comes in close second though)
Bambi - Flower and Bambi
Cinderella (including sequels) - Lucifer and Prudence
Alice In Wonderland - Mad Hatter and White Rabbit
Peter Pan - Tick-Tock and Hook
Lady and The Tramp - Jock and Trusty
Sleeping Beauty - Maleficent and Fauna (she's the green one right?)
One Hundred and One Dalmatians - Cruella de Vil and Sgt. Tibbs
Sword in the Stone - Archimedes and Madam Mim
Jungle Book - Kaa and Shere Khan (Bageera comes in third)
The Aristocats - Duchess
The Many Adventures of Winnie The Pooh - Eeyore and Winnie The Pooh
The Rescuers - Bianca
The Fox and the Hound - Todd (and Copper when he was young)
Black Cauldron - Gurgi and Horned King
Great Mouse Detective - Basil and Fidget (Olivia was adorable though)
Oliver and Company - Dodger
The Little Mermaid - Ursula hands or tentacles down
Beauty and The Beast - Gaston
Aladdin - Jafar
The Lion King - Scar and Rafiki
Pocahontas - Meeko
Hunchback of Notre Dame - Esmerelda and Phoebus
Hercules - The Muses
Mulan - Shang
Emperors New Groove - Yzma
Atlantis: Lost Empire - Helga
Treasure Planet - Captain Amelia
Home On The Range - The Buffalo Alamaeda rides
Toy Story - LGM's
A Bugs Life - Heimlich
Monsters Inc. - Boo
Finding Nemo - Dory
The Incredibles - Mirage and Frozone
Cars - Luigi? is that his name the one that fixes tires I haven't seent the movie for a long time
Hey Prudence I think I might see what your characters generally have in common, they're all kind of high society type or bookish. Either that or they're snobbish.

I'm not good at guessing games lol