In Kingdom Hearts Birth By Sleep, she met Xehanort. Ever since then it's been "the mistress of all evil will rule all worlds and the dominion known as kingdom hearts"! "Ahahahahahaha".

 

Over the ten year time span from BBS to KH1, Maleficent and her buttbuddies (Pete, Hades, Jafar, Ursula, Captain Hook, Oogie Boogie) have destroyed hundreds of worlds in search for the Princesses of Heart. Once KH1 started, they merely had just 3 more left to find.

 

Maleficent was so badass with her Heartless and Disney Villains. She succeeded in collecting all the Princesses of Heart but failed in the end. It turns out that the Heartless (Ansem) merely used her as a tool to help find the Keyhole.

 

In 358/2 Days, Axel and Roxas were sent to Hollow Boastion to free Diablo.

 

Later on Kingdom Hearts 2, Diablo made it all the way to Mysterious Tower with Maleficent's cape which shouldn't be possible. The three fairy god-mothers revived her by just remembering her.

 

Maleficent later comes back with what I presume was a slightly larger Heartless army, considering Pete came back from his mission in completing his mission in creating a larger army. None of the previous Disney villains ally with her which angers her. Pete does most of Maleficent's dirty work and all.

 

In the end, Orginization XIII merely used her to help form Kingdom Hearts.

 

So Maleficent's been used in both numbered titles, do you think she'll ever outsmart Xehanort? It would be an epic plot twist.

 

 

Unless said "Sora-battle" leaves Xehanort too weakened to do anything about it, of course.

 

Very possible.