Walker Conor Mullen Lieutenant Walker is a complex character. His politics are much further right than Von Rheingarten's and he agrees with Hitler's most extreme views. He detests the Jews and enjoys the power he has as a superior officer in an occupying army. However, he is also terribly lonely and desperate to find friendship and love. Conor Mullen trained in Dublin. His television credits include the critically acclaimed Reckless and Reckless: The Sequel.