Buono played the villain King Tut on the television series "Batman". A Jekyll-and-Hyde character, William McElroy is a timid Yale professor of Egyptology who, after being hit in the head with a brick at a peace rally, assumes the persona of the charismatic, monomaniacal Egyptian King Tut. When he suffers another blow to the head, the villain recovers his meek academic personality. The role, which proved to be the most frequently featured original villain in the series, was one of Buono's favorites because he was delighted at being able to overact without restraint.