User blog comment:DaisyPeachPower/Full Review of All-Stars/@comment-11883116-20160717152532/@comment-4742462-20160717182826

@ArtDraw12, I guess prior to The Ridonculous Race he was just tired of primarily voicing only him before being given a chance to voice more characters.

I've also heard that Sam was picked as an excuse to use Brian Froud.