| Igor Moukhin | May - August 2003 | |
| Christian Schwarzwald | November 2003 - January 2004 | |
| Zenita Komad | November 2003 - January 2004 | |
| Tomoko Inagaki | November 2003 - January 2004 | |
| Güçlü Öztekin | April - July 2012 | |
| Christian Schwarzwald | October - December 2011 | |
| Waqas Khan | August - October 2012 | |
| Nader Ahriman | August - September 2011 | |
| Alfred Tarazi | January - June 2011 | |
| Razvan Botis | October 2010 - January 2011 | |
| Ali Taptik | August - September 2010 | |
| Inci Furni | June 2010 - July 2012 | |
| Dzine | April - April 2010 | |
| Eliezer Sonnenschein | November 2009 - February 2010 | |
| Mithu Sen | August - September 2009 | |
| Jonathan Hernández | May - July 2009 | |
| Jarbas Lopes | April - June 2009 | |
| Laleh Khorramian | November 2008 - March 2009 | |
| Sakshi Gupta | September - November 2008 | |
| Helga Schmidhuber | August - August 2008 | |
| Ding Zhang | May - June 2008 | |
| Frank Haines | April - April 2008 | |
| Clarina Bezzola | June - July 2007 | |
| Secundino Hernández | May - July 2007 | |
| Jannis Varelas | October 2006 - March 2007 | |
| Ken Kagami | January - April 2006 | |
| Shintaro Miyake | February - April 2004 | |
| William Mackrell | February - March 2013 |