Rami Malek on Sunday took home the best actor Oscar for his wildly popular portrayal of late Queen frontman Freddie Mercury in Bohemian Rhapsody, about the iconic British band's rise to fame.

He bested a crowded field: The other favorite, Christian Bale (Vice); Bradley Cooper (A Star Is Born); Willem Dafoe (At Eternity's Gate) and Viggo Mortensen (Green Book).

Here are the winners in key categories at the 91st Academy Awards:

Green Book took home the best picture Oscar, while Alfonso Cuaron's Roma won for best director, best foreign film and best cinematography.

Top acting honors were shared among four different films.

Best actress: Olivia Colman, The Favourite

Best supporting actor: Mahershala Ali, Green Book

Best supporting actress: Regina King, If Beale Street Could Talk
Best foreign language film: Roma (Mexico)

Best cinematography: Alfonso Cuaron, Roma

Best animated feature: Spider-Man: Into the Spider-Verse

Best documentary feature: Free Solo

Best original screenplay: Green Book -- Nick Vallelonga, Brian Currie and Peter Farrelly

Best adapted screenplay: BlacKkKlansman -- Spike Lee, Charlie Wachtel, David Rabinowitz and Kevin Willmott

Best original score: BlackPanther -- Ludwig Goransson

Best original song: Shallow from A Star Is Born, Lady Gaga