second appearance) – Bonacelli is the commander of an Italian prisoner-of-war camp near the fictional city of Capezio. Bonacelli does not support the Fascist war effort, and attempts to desert to Switzerland in "The Pizza Parlor" under the guise of a trip to Stalag 13 to study Klink's operations. Hogan convinces him to instead return to his camp and act as an Allied spy. Bonacelli appears again in "The Return of Major Bonacelli," having traveled to Stalag 13 after he is discovered as an Allied agent. Hogan talks Bonacelli into photographing the new advanced German anti-aircraft gun before defecting to England, narrowly escaping capture by Hochstetter in the process. Olsen (portrayed by Stewart Moss) – Olsen is Hogan's "outside man"; when someone is brought into the camp, Olsen goes out to ensure that the number of prisoners remains the same. In the pilot episode "The Informer," Carter asks Hogan what Olsen does while out of the camp, and Hogan says, "We never ask him." In the episode "Some of Their Planes Are Missing," Olsen takes Hogan's place in a bed, pretending to be asleep, so that the Germans would not know that Hogan is out of the camp. Sergeant Vladimir Minsk (portrayed by Leonid Kinskey) – Minsk is one of Hogan's men, a Russian sergeant, who appears only in the pilot. Kinskey declined to return for further episodes, and was replaced in the main cast by Larry Hovis as Carter. Addison, Broughton, Walters, and Slim (portrayed by Roy Goldman -Walters- and three unknown actors) – Four prisoners in Hogan's barracks who serve as extras in crowd scenes and occasionally provide minor support for operations requiring more men than Hogan's core team. They appear in the majority of the show's episodes, but have almost no dialogue and are never listed in the credits. References Hogan's Heroes