Ursula's Nobody

In the final battle of The Little Mermaid 2, Nefarious and Morgana use the powers of the corrupted trident to summon the soul of the recently deceased Ursula, and split her into a Heartless and Nobody. Ursula's Heartless was basically her giant form only with pale yellow eyes, a black trident, and the Heartless symbol on her chest. Morgana used the trident to try and control Ursula's Heartless, but Ursula rebelled, stealing the trident for herself and freezing Morgana in a giant block of ice. With the powers of the trident, Ursula's Heartless was nearly unstoppable. She was eventually defeated when Melody and Sora stole the trident from her, and gave it to King Triton, who used a light blast to destroy Ursula's Heartless once and for all.

However, what our heroes forgot to realize was that whenever a Heartless is created, a Nobody forms right afterwards. Ursula's Nobody appeared in Twilight Town, where Young Xehanort and Maleficent appeared to recruit her back into the Villain League in exchange for revenge on Ariel and Prince Eric. She accepted the offer, and was given the name of Sarluux as her new designation in the Nu Organization. Sarluux will make her debut in Spirited Away as a member of the Nu Organization.