Kara (KH3:SKW)

Kara is the Eleventh member of the New Organization XIII in the Kingdom Hearts III: Second Keyblade War and a somebody that was created from the remains of Vanitas, in Kingdom Hearts: Dream Drop Distance he accompanied Young Xehanort to the world La Cité des Cloche which is trapped in sleep where his heart resonated with Ventus and Sora's causing Vanitas to briefly appear for the last time, Young Xehanort later reveals that Kara wasn't born naturally and he was born from the remains of Vanitas therefore he is Vanitas' legacy and must carry on Vanitas' quest.