Theseus Scamander

Theseus Scamander was a British wizard who lived during the early 20th century. He worked as an Auror with the British Ministry of Magic and was described as "powerful." He had at least one sibling, a brother, Newt, who eventually became a famous magizoologist and author.

In 1926, Theseus corresponded with Percival Graves, the Director of Magical Security of the MACUSA, about recent events in New York (presumably the chaos caused by Theseus's brother's escaped creatures).