Villains because they're the best characters disney has ever created. Maleficent, Ratigan, Sykes, Ursula, Gaston, Jafar, Scar, Ratcliffe, Long John Silver, Frollo, Hades and Shan-Yu are the most evil villains of all. My two favourite disney Villains are Sykes from Oliver and Company and Jafar from The Return of Jafar because Sykes wants Fagin's money and kidnaps Jenny and Jafar gets his revenge on Aladdin.
It really depends on the movie, like for Sleeping beauty I like the villain better, same with the Little Mermaid, but in Snow White I like the Heroes/Heroines better, same with Mulan.