This individual was a French Muggle who worked as a policeman in 1927.
Biography
In 1927, he was guarding near the entrance to Place Cachée. When Newton Scamander and Jacob Kowalski arrived at Paris to investigate, Newt used the Confundus Charm on the Policeman for a distraction.
Behind the scenes
The policeman was portrayed by Ed Gaughan in Fantastic Beasts: The Crimes of Grindelwald.