Who is Lebeau from Incident at Vichy: A Play and what is their importance?

Leabeu is a painter. He is arrested while taking a walk. Leabeu is described as a bearded, unkempt twenty-five-year-old. He is nervous about his detainment, suspecting the racial implications because the Professor measured his nose before arresting him. Lebeau is the fifth prisoner to be questioned, and he is not released.