User blog comment:TheTDQueen2014/No TDPI Characters in Ridonculous Race?/@comment-5899967-20140729095608

The cast list usually means the cast of the cartoon, not necessarily the cast of contestants. I'd like to see Chris being thrown in the competition of his own show, but I really doubt he would genuinely audition for a reality show, so I agree with him being a cameo. Though having Chris and Chef together would be cool.

And since TDPI characters aren't in this, there are more chances to see the first cast.