· other series regulars include “conclave” star john lithgow as album dumbledore, “i may destroy you” breakout star paapa essiedu as severus snape , “tumbleweeds” oscar nominee janet mcteer as. Janet mcteer as minerva mcgonagall, the strict but fair deputy headmistress and transfiguration professor. The upcoming series will be a faithful adaptation of the “ harry potter ” book series , exploring every corner of the wizarding. · john lithgow as albus dumbledore, the wise headmaster of hogwarts. · who is in the cast of the harry potter series ? From severus snape to the golden trio, here are all of the actors currently confirmed for the harry potter tv reboot. · hbo has announced the cast of its “ harry potter ” series. · hbo has announced many of the key cast members for the harry potter tv show, which will feature both seasoned and new performers. Paapa essiedu as severus snape , the mysterious potions professor. The black actor will play the role of hogwarts teacher, who was previously played by the late alan rickman in the film. Nick frost as rubeus hagrid, the beloved half-giant. · paapa essiedu will play severus snape in hbo s new harry potter series. All three were reported to be in talks with the network in recent weeks. · frost has been cast as hagrid, mcteer will play minerva mcgonagall, and essiedu will portray severus snape.
