Transportation Secretary Pete Buttigieg of truth-telling on Fox News fame is helping Democratic vice presidential nominee Tim Walz prepare for his upcoming debate against GOP counterpart JD Vance, The Washington Post reported Thursday.

Buttigieg has been drafted to play Vance of false migrants-eating-pets claims and childless cat ladies notoriety in mock debate sessions ahead of the CBS News-hosted event on Oct. 1, said the Post, citing multiple sources.

The former mayor of South Bend, Indiana, former Democratic presidential candidate and current Biden White House Cabinet member is involved in his personal capacity, per the newspaper.