IGPX: The Ichi Megamix is a 70 (or so) minute mixtape released on December 25, 2013 on the official Toonami tumblr. On December 12, 2013, on the official Tumblr page, Toonami announced the production of a mixtape of songs from IGPX mixed by Skull Island (Jason DeMarco and Brent Busby) named after Team Satomi's mechanic, Ichi. During the time, there was a contest to decide the cover art for the megamix submitted by fans through the official tumblr and Jason DeMarco's twitter, @clarknova1. The winner of the contest would receive a free Toonami T-shirt that was also being given out during the December 2013 T-shirt Sweepstakes.
The winning cover art was chosen on December 23rd and was designed by Todd Jensen with an alternate cover also chosen as a "back cover" that was created by Cody Silfies. Both Jensen and Silfies won a free Toonami t-shirt and the album was released on December 25 at Noon E/T.