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

Dominic McLaughlin will portray Harry Potter. Alastair Stout will play Ronald Weasley, and Arabella Stanton will play Hermione Granger.

All the news on HBO's streaming 'Harry Potter' TV series, including cast, release date, how to watch, development and the extent of J.K. Rowling's involvement.