|Behind the scenes|
|First Appearance:||King Ottokar's Sceptre|
|Last Appearance:||Explorers on the Moon|
Colonel (Boris) Jorgen was an aristocrat and colonel of the Syladavian Army, as well as a sworn enemy of Tintin.
The name Boris Jorgen is never used in full, but is inferred. Both first and last names have a German ring to them, this may be a reference to the German Anschluss of Austria on which the Bordurian annexation plot is based.
Boris first appears in King Ottokar's Sceptre, as a relatively minor character, only addressed by his first name. He is an aide to King Muskar XII, but also an agent for the neighbouring country of Borduria. His fate at the end of the story is not clear, but he would have been arrested or discredited after the Bordurian annexation plot was foiled.
Jorgen makes a cameo appearance in Destination Moon, then confronts Tintin in Explorers on the Moon, having stowed away on the moon rocket. He and his accomplice Frank Wolff attempt to maroon the rocket crew on the moon, but are prevented from doing so by Tintin. Jorgen escapes custody during the return flight and attempts to kill the rocket crew, but Wolff turns on him, and Jorgen inadvertently shoots himself through the heart in the ensuing struggle, dying instantly. The crew "bury" his body in space.