Cho Chang's grandfather

Chang was a wizard and Auror who lived in the early 20th century.

Behind the scenes

 * He is played by Simon Wan in 🇨🇬.
 * It is possible that he is related to Cho Chang.
 * Given the second Fantastic Beasts film is set in New York, Paris and London, he may have worked for the British Ministry of Magic, the French Ministry of Magic, or the Magical Congress of the United States of America. It is also possible that he worked for another wizarding government or was independant.

Notes and references
Cassius Bell