Dana Snyder got the job of voicing Master Shake through an old college friend, who went to high school with director
Dave Willis. Willis was looking for voice actors and asked her if she knew anyone with a weird voice, and she recommended Snyder. His first "audition" was leaving a drunken, abusive, message on Dave Willis' voice mail at 3 am. Willis loved it but accidentally erased the recording and asked him to re-record it, which he did, but sober this time. Willis wasn't as keen on the second recording so he asked him to do it like he did the first time. Snyder dutifully went out with some friends, got drunk, and left another 3 am message. He was given the job.