There are no runs for the Mystery racer, so my brother and I used a password generator to make passwords for all variations of the Mystery Racer. The Myster Racer is a silhouetted racer that can only be accessed through the use of passwords. It was possibly intended as another character, but got scrapped during development, and is clearly unfinished. Using Mystery Racer passwords, one can also access 3 different unused and glitched neon car colors, unused extremely glitched planets, unused "cars"(they are unfinished and completely unusable), etc. My brother and I created a full list of all the variations of the Mystery Racer, including the 3 unused colors, on each difficuly (including an extremely glitched "passwordpassword" difficulty). Here is the video link where we tested and discovered all of this.