 SCP-542 claims that it has been, at one time, a typical human of Caucasian descent, identifying as German in nationality. SCP-542 requests to be called Herr Jirurg, or surgeon by staff, and is fluent in German, English, and French, and can speak a small bit of Polish and Italian. He has been described as a Frankenstein's monster in appearance. SCP-542 may hide his odd features under heavy clothing, but prefers to wear only a nice pair of slacks, revealing his hunched form, distended gut, warped ribcage, and bizarre arm structure.