Because I am bored and have nothing better to do, and I like to keep track of odd things like this, here you go. I have managed to get all 99 characters. I would also like to say to those MISSING characters, I was only able to get my characters by PAYING for the chests, and it was a LONG time between buying them too. I don't know if that helps, but it seemed to help me, so a helpful hint to those who need to collect characters still.
Merlin - 2 (he doesn't get any higher)
Mickey, Minnie, Pluto, Goofy, Donald, Daisy, Pete, Chip, Dale - all at 10
Zurg, Jessie, Woody, Buzz, Bo Peep, Hamm, Sarge, Rex, Bullseye - all at 10
Alien - 5
Cinderella, Charming - both at 10
Tinkerbelle - 10
Elizabeth, Jack, Will - 6 (doesn't go any higher)
Mike, Sully, Boo, Roz, Celia, Randal - all at 10
Wall-E, Eve - both at 10
Mother Gothel, Flynn, Rapunzel, Maximus - all at 10
Aurora, Philip, Flora, Fauna, Maryweather - all at 10
Judi, Nick, Flash, Chief - all at 10
Mowgli, Baloo, King Louie - 10
Bagheera - 9
Sheet Khan - 4
Dash, Violet, Mr. Incredible, Mrs. Incredible, Frozone, Syndrome - all at 10
Zero, Jack, Sally, Oogie Boogie - all at 10
Anna, Olaf, Elsa, Sven, Kristoff, Hans - all at 10
Mushu, Mulan, Li Shang - all at 10
Belle, Beast, Gaston, Chip, Mrs. Potts, Cogsworth, Lumiere - all at 10
Simba, Nala, Zazu, Rafiki, Pumpa, Scar, Timon - all at 10
Aladdin, Genie, Iago, Jasmine, Abu, Carpet, Jafar - all at 10
Alice - 7
White Rabbit - 9 (ready for 10)
Caterpillar - 7
Queen of Hearts - 5
Cheshire Cat, March Hare, Mad Hatter - all at 8 (all ready for 9)
May we ALL get the seven draws, snow white, and the evil queen!