- as Isidora's Father (Voice)
- as Calliope Snelling / Bella Navarro / Agnes Coffey / Noreen Blainey / Ravenclaw Entrance Knocker / Ghost / Townsperson / Prisoner (Voice)
- as Amit Thakkar (Voice)
- as ... (Voice)
- as Beatrice Green / Betty Bugbrooke / Feenky / Perdita Strix / Steepley and Sons Shopkeeper / Kitchen House-Elf (Voice)
- as Professor Abraham Ronen / Gerbold Ollivander / Deek / Percival Rackham / Solomon Sallow / Eddie Thistlewood and others (Voice)
- as Lodgok / Theophilus Harlow / Fastidio / Timothy Teasdale / Thaddeus Travers / Finley Grimes / Albie Weekes and others (Voice)
- as Alexandra Ricketts / Claire Beaumont / Johanna Bickle / Lottie Featherbottom / Prisoner / Townsperson / Effie Bones / Ignatia Wildsmith (Voice)
- as Isidora Morganach / Samantha Dale / Lenora Everleigh / Nerida Roberts / Anne Sallow / Student (Voice)
- as ... (Voice)
- as Professor Dinah Hecat / Cassandra Mason (Voice)
- as Sorting Hat / Victor Rookwood / Nearly Headless Nick / Peeves / Professor Cuthbert Binns / Ferdinand Octavius Pratt and others (Voice)
- as Bloody Baron / Parry Pippin / Agabus Philbert / Wigot Spitchwick / Clifford Cromwell / Jasper Trout / Gargoyle and others (Voice)
- as Professor Bai Howin / Fatimah Lawang / Ruth Singer (Voice)
- as ... (Voice)
- as Professor Mudiwa Onai / Ellie Peck / Lethia Burbley / Sylvia Pembroke (Voice)
- as Professor Chiyo Kogawa (Voice)
- as Professor Matilda Weasley (Voice)
- as Everett Clopton / Arthur Plummly / Elek / Ernie Lark (Voice)
- as Professor San Bakar (Voice)
- as Professor Aesop Sharp / Ranrok / Charles Rookwood / Eldritch Diggory (Voice)
- as Professor Mirabel Garlick / Helen Thistlewood / Marianne Moffett / Ethel Wigley / Magical Well / Dark Witch / Townsperson (Voice)
- as ... (Voice)
- as Niamh Fitzgerald / Ghost (Voice)
- as Professor Phineas Nigellus Black (Voice)
- as Professor Satyavati Shah / Dorothy Sprottle / Indira Wolff / Flutes and Lutes Shopkeeper / Priya Treadwell / Jemima Collins (Voice)
- as Avatar Voice Two (Voice)
- as Imelda Reyes (Voice)
- as Sirona Ryan (Voice)
- as Avatar Voice One (Voice)
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