Michael J. Pollard (b. May 30, 1939 - d. November 20, 2019) portrayed Mister Mxyzptlk on the series Superboy.
|"Meet Mr. Mxyzptlk"||February 25, 1989||Mister Mxyzptlk|
|"Mr. and Mrs. Superboy"||November 25, 1989||Mister Mxyzptlk|
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