How powerful is mister mxyzptlk?

[marshal99]

Mxy has always been a reality warper , he rewrote metropolis reality one time.

[sandmountainslim]

Lol Mxyman! What issue was that? I remember it from late 80's or early 90's? 1991 or so ?

[golgi]

How powerful? VERY powerful. Definitely one of the most powerful characters in comic history. Here is a RESPECT thread of him.

http://www.killermovies.com/forums/f98/t474704.html

[marshal99]

Lol Mxyman! What issue was that? I remember it from late 80's or early 90's? 1991 or so ?

Just before Doomsday if i'm not wrong. Adventures of superman 496.

[Ood Omega]

Not sure but I think this is the first post-crisis appearance of Mr. Mxyzptlk, way back in Superman #11.

In the same issue he also turns a boy's toy ape into a giant yellow gorilla, turns an image of a type writer on a billboard into an actual giant floating type writer, turns Lois into a mannequin, turns a mannequin into a real woman, and brings life to other objects including a box truck and the Daily Planet building.