*Warning: This article contains minor spoilers for The Witcher season four*

The fourth season of Netflix's fantasy series, The Witcher , has returned with several key characters from the original books making their first appearance.

Drawing heavily from Andrzej Sapkowski's fifth novel, Baptism of Fire, audiences will meet a unique vampire named Emiel Regis.

It may seem odd that Geralt, a monster hunter, would count a vampire among his closest allies, but there's a good reason for it. But who exactly is Regis?

What role does he play in The Witcher's narrative and who portrays him on screen? And how does his character differ in the book? Here's everything you need to know. View 2 Images READ MORE : Will there be a season 5 of The Witcher? Dramatic final episode explained

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