There are tons of characters, so I'll just list the main ones and the important side/minor characters
The main characters:
Tinkerbell
Silvermist
Fawn
Rosetta
Vidia
Periwinkle
Iridessa
Zarina
The Secondary/minor characters:
Queen Clarion
Lord Milori
Fairy Mary
Fairy Gary
Spike
Gliss
Chloe
Glimmer
Rumble
Dewey
Sled
Terrance
Bobble
Clank