Famke Janssen joins Hansel and Gretel February 9, 2011 X-Men star joins Hansel and Gretel: Witch Hunters… X-Men’s Famke Janssen has boarded the cast of Hansel and Gretel: Witch Hunters. Janssen will join Jeremy Renner and Gemma Arterton in the supernatural thriller. Renner and Arterton will play the title characters based on the classic fairytale. It is not yet known what role Janssen will portray. Director Tommy Wirkola (Dead Snow) will begin filming the project this March.