HBO's 'Harry Potter' TV show recasts all of the Hogwarts characters with new actors. See who's who in this cast guide.

HBO is betting high on the success of the Harry Potter series, by making sure the cast can keep their formal education while shooting.

HBO has released the first look at the comedian and actor in costume as the half-giant and Hogwarts groundskeeper Rubeus Hagrid for its upcoming "Harry Potter" series. The photo was shared to the official "Harry Potter" and HBO Max social media accounts.