100
The Witcher's Liam Hemsworth hadn't watched Netflix show or read the books before Geralt casting
(www.eurogamer.net)
Witcher books, Witcher games and everything else Witcher.
Why they would ignore a primary source like Cavil, I dunno. Dumb move.
Because they didn't want a primary source. Especially not one that would try to correct them instead of letting them make their own shitty story in the universe and destroying existing characters in the process.