Baron von Wolff is a 12th-century Germanic crusader of the Teutonic Order, prophesied to return exactly 700 years after his death at the Battle on the Ice. The Nazi occult group Ahnenerbe orchestrates his resurrection during World War II in 1942, specifically to break the Eastern Front stalemate. They seek to exploit his necromantic powers and control over an undead army of spectral Teutonic Knights for their campaign against the Soviet Union.

His return coincides with the cosmic "Moment of Truth," a recurring event every seven centuries permitting one individual to alter history. As an antagonist, von Wolff engages in spiritual warfare within the Gloomy Valley (Valley of the Dead), where outcomes directly influence physical battles between Nazi Germany and the Soviet Union. His actions include orchestrating the visionary decapitation of a Soviet general, threatening the Red Army's command structure.

He embodies a villain archetype with minimal backstory, solely serving Nazi interests as a resurrected entity. Von Wolff escapes the climactic confrontation, retaining his sword, leaving his fate unresolved. His narrative role is confined to opposing the psychic Soviet unit, First Squad, with no documented appearances in expanded media.