Final answer:
The characters that Elie meets through his stay in the concentration camps are known as inmates. They include Jews, political prisoners, regular criminals, enemies of the Nazi regime, Romani, and other groups. These inmates were subjected to harsh conditions and treated differently based on their background.
Step-by-step explanation:
The characters that Elie meets through his stay in the concentration camps are known as inmates. These inmates include a variety of people such as Jews, political prisoners, regular criminals, enemies of the Nazi regime, Romani, and other groups. They were all subjected to harsh conditions and treated differently based on their background. Many of them suffered and were either worked to death or taken to gas chambers.