HJJSFGVUASCYTHSBAHGFCIYFGBCU GOD WHAT THE F**K!JWHRETFIUWGHEFCXU<WF BVCFGBVWEGFNEW AAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!! NOMORENOMORENOMORENOMORE
William's liquid remnant from melting down the endos from the original animatronics was used on the Funtime Animatronics to make them more alive. So technically, Ballora is possessed.