I've just finished finally unlocking Toadette -- but while Mario specifies growing with Mushrooms, Luigi jumps higher, Princess does a floaty jump, Toad runs faster, and Yoshi does a flutter jump...I have no clue what Toadette's ability is. Any help would be appreciated.
She plays identically to Mario, but unlike Mario, she gets defeated in one hit. Her special ability is converting some Toads to the player's side before the final tally in Toad Rally.
Source: Mario Wiki