13 actors who went from 'Harry Potter' to 'Game of Thrones'

"Harry Potter" and "Game of Thrones" are completely different worlds.

But the worlds converge thanks to actors who have appeared in both.

While some of the crossovers may be recognizable, like Natalia Tena as Tonks and Osha, others may come as a surprise.

Here are 13 actors who have appeared in both series:

Michelle Fairley made a brief appearance in the first part of "Harry Potter and the Deathly Hallows" as Hermione's mother.

But "GOT" fans might know her best as the strong-willed Catelyn Stark.

Natalia Tena is known throughout the "Harry Potter" fandom as the amazing Nymphadora Tonks, but don't call her Nymphadora.