Cavill, who was last seen engaging in some fisticuffs in Mission: Impossible - Fallout, is well-known for playing Superman in the current wave of DC comic book movies. Netflix's press release notes that he's a fan of Sapkowski's books, so he'll likely have a strong understanding of his character. It's not clear when Netflix plans to release the series, but with only one cast member announced so far, it will likely be some time before The Witcher hits your streaming device of choice.