At the end of Wicked, Elphaba rebels against the Wizard and Madame Morrible, leading her to become the Wicked Witch of the West, yet the movie’s finale has other significant consequences, including the death of Governor Thropp. Based on the book and musical of the same name, Wicked is a half-spinoff, half-prequel to The Wizard of Oz, and follows Elphaba Thropp, a young woman with incredible power who begins attending magic school, alongside the iconic pink witch, Galinda. Although Wicked is being split into two parts, audiences should not underestimate the power of Wicked: Part One’s ending.

https://screenrant.com/wicked-governor-thropp-death-sequel-impact-explained/