Otto was a German soldier present at the Nazi camp excavating Tanis in 1936. He stood guard in front of the tent belonging to René Emile Belloq where Marion Ravenwood was being held, but was dismissed by Belloq at the suggestion of Ravenwood.
Behind the scenesEdit
Regarding the identity of the character of Otto in the film, Pablo Hidalgo writes:
"We found a call sheet with Christopher Frederick for one day only -- a day of shooting inside Marion's tent. Because all the other characters in the call sheet are identified, we figure he is either the Arab servant that sets up Belloq's dinner, or the German soldier that pushes Marion into the tent, but there's currently no way to identify him beyond that."
The website Aveleyman.com however reveals Christopher Frederick's appearance, in an episode of BBC Plays, Caught on a Train as a German guard. Although the character of Otto is not clearly seen in the tent scene Frederick's facial shape most closely resembles the German soldier rather than the Arab servant.