Bush will report to Disney Entertainment Co-Chairman Alan Bergman, while Oscar-winning producer Clark Spencer ("Encanto," "Zootopia") continues as president, Walt Disney Animation

Walt Disney Animation Studios is replacing Jennifer Lee, its chief creative officer, after an uneven six-year tenure.

Lee is writing and directing “Frozen 3” and writing “Frozen 4” with Marc Smith — the sequels to Disney Animation’s 2013 “Snow Queen”-inspired cultural hit “Frozen,” for which she served as writer/director. The movie made $1.3 billion worldwide and earned two Oscars, for best animated feature and for earworm song “Let It Go.”

Frozen II was the last big hit that Disney Animation had. The pandemic would follow shortly after its release. Raya and the Last Dragon was released while many theaters were still closed. Encanto, Strange World, and Wish were all disappointments at the box office, though Encanto would find new life on Disney+.

As Disney readies the sequels to its uber-grossing $1.75 billion Frozen franchise, Walt Disney Animation Studios Chief Creative Officer Jennifer Lee is segueing from her position to direct and write Frozen 3 and pen Frozen 4 with Marc Smith.