Artyom

Artyom (Russian: Артём), known on his passport as Artyom Alekseyevich Chyornyj, is a Ranger and the protagonist of the video games Metro 2033, Metro Last Light, and Metro Exodus as well as the main character of the books Metro 2033 and Metro 2035. He does not appear in Metro 2034, which features a different man with the same first name.
After Miller's death, he succeeds him and becomes the new leader of the Spartan Order, provided he survived.