Mulan is the protagonist of the Disney film with the same name. She makes her only Epic Mickey appearance in Epic Mickey: Power of Illusion.
Like the other toons, she has been sucked into Cartoon Wasteland by Mizrabel, who has trapped her in the Castle of Illusion. Mickey will need to rescue her from the Cave of Wonders: Inner Reaches.
Once she has been rescued, she will return to the Fortress, where she will set up her own room. She will give Mickey various quests, including one to rescue her guardian dragon, Mushu.