The award-winning UK effects house BGFX – headed up by Barrie Gower (left) – came to the attention of the Duffer Brothers for their work on Game Of Thrones and Chernobyl.
Three years later their effects for Stranger Things season four villain Vecna have been nominated for an Emmy. Barrie Gower opened up his archives and sat down with SFX to talk about creating an iconic monster.