The following are past staff members that have contributed significantly to the production of the podcast.
From October 2010 to August 2015. Appeared on over 160 episodes (both MTI Countdowns and Japan Top 10).
From October 2010 to July 2015. Appeared on over 90 episodes (both MTI Countdowns and KTop 10).
From July 2012 to July 2014. Appeared on over 50 episodes.
From September 2014 to August 2017. Appeared on over 50 episodes (both MTI Countdowns and Japan Top 10).
From June 2014 to February 2017. Appeared on over 50 episodes.
From September 2012 to April 2015. Appeared on over 40 episodes (both MTI Countdowns and Japan Top 10).
From December 2013 to December 2015. Appeared on over 40 episodes.
From May 2013 to June 2015. Appeared on over 40 episodes.
From November 2012 to July 2014. Appeared on over 40 episodes.