Mister Mxyzptlk

Mister Mxyzptlk is a reality manipulating imp from the 5th Dimension who antagonizes Superman.  Not actually evil,  he does no long-term damage although he constantly seeks to pester and prove he’s smarter than the man of steel.  He cannot be made to return to his home dimension until he’s tricked into saying his own name backwards “Kltpzyxm.”

First Appearance:  Superman #30 (1944)
Creators:  Jerry Siegel,  Joe Shuster
Powers:  Magic,  Teleportation,  Reality Alteration,  Metamorphosis,  Immortality,  Flight

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Issues

Black entries are ongoing series
Green entries are Limited series
Red entries are One-Shots
Orange are alternate universe stories
Blue is for comments

Reading Order

Superman #30

Superman #96

World’s Finest #113

Superman #174

Superman #283

Superman #349

Action Comics #583

Superman Vol. 2 #11

Adventures of Superman #441

Action Comics #721

Superman: Man of Steel #56

Superman: Man of Steel #75

New Year’s Evil: Mr. Mxyzptlk #1 (1998)

Adventures of Superman #630

Adventures of Superman #634

Adventures of Superman #638

Adventures of Superman #646

Countdown to Final Crisis #23