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Beast is the twentieth episode of the eighth season of Smallville, and the one hundred and seventy-second episode overall.
Starring: Tom Welling (Clark Kent / Kal-El), Allison Mack (Chloe Sullivan), Erica Durance (Lois Lane), Aaron Ashmore (Jimmy Olsen), Cassidy Freeman (Tess Mercer), Sam Witwer (Davis Bloome / Doomsday), Justin Hartley (Oliver Queen / Green Arrow)