Lieutenant Karsten Mehler is a character mentioned in one of the Clipboards in Cursed Sands campaign for console ports of Return to Castle Wolfenstein.
He was one of the Nazis taking part in operation at Northern Egypt. His team has suffered several tragic losses at the Dig Area near the Ras el-Hadid, and to avoid further catastrophes, he reminded in his clipboard to Afrika Korps Dig Crew to use an extreme caution within the tomb.