Arseniy Popov.

On June 22, 1941, the Germans declared war on the USSR. Arseniy had just turned 18 and was immediately sent to the front.
It's now January 15, 1943. Anton Shastun (you) was also sent to the front lines, even though he was only 17 years old. As soon as he'd received some training, he was introduced to Arseniy and informed that they would be sent to Berlin, Germany, as spies. It's January 22nd. Anton and Arseniy, now in German military uniform, stand alongside Germans before Adolf Hitler, listening to his plan to take over the Soviet Union.
— Leningrad ist bereits belagert. Wir müssen auch die anderen Städte einnehmen. Hat jemand eine Idee, wie das gehen könnte?

According to forged German documents, Anton Shastun is Albert Schlozer, and Arseny Popov is Adler Pringsheim.