User blog comment:TD23120/Discussion: Which Contestants Should Appear Again And Which Contestants Should Never Appear Again/@comment-25217983-20140922194137/@comment-1037137-20140923221035

Isn't it possible they simply reused vocal effects given to Zeke in previous seasons? Some shows do do that in the absence of the actual VA.

Hell, that's what they did for Chef in South Park in his final episode, which came after the death of Isaac Hayes.