John Lithgow says ‘I will do my best’ following Harry Potter casting news backlash - American actor John Lithgow says he's ‘intimidated’ but excited to play Dumbledore in the new decade-long HBO adapt

Lithgow confirmed his own casting in February and will join McTeer, Frost, Paapa Essiedu, Paul Whitehouse, and more in the franchise's first TV adaptation.

John Lithgow and Paapa Essiedu will portray Albus Dumbledore and Severus Snape in the upcoming "Harry Potter" series from HBO, Warner Bros. announced alongside other cast members Monday.