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."
The history of Mister Mxyzptlk is unknown before he introduces himself to Superman in his most known form, although it is suggested that he visited the universe before in other forms.
Powers and Stats
Tier: High 2-A
Name: His real name can't be translated to any human language, Known as Mister Mxyzptlk
Origin: DC Comics
Classification: 5th Dimensional Imp
Powers and Abilities: Reality Warping, Teleportation, Shapeshifting, Immortality (Type 4, Everytime he dies, a "Supreme Being" will sent him back to life), Flight, 4th Wall Awareness, Life Manipulation (Can give life to inanimate objects, Gave Clark and Lois a baby), Toon Force (Turned the world into a cartoon), Can make things appear out of nowhere, Duplication, Mind Reading, Gravity Manipulation, Plot Manipulation (Stated to be able to "do a retcon", Has punched a DC writer in the face), Memory Manipulation (Erased everyone's memeories about Emperor Joker), Can enter movies, Intangibility, Precognition, Higher-Dimensional Manipulation, Non-Corporeal (It was stated that "his body is a construct"), All of Emperor Joker's abilities, likely much more
Attack Potency: High Multiverse Level+ (5th dimensional being)
Speed: Immeasurable (5th dimensional being)
Lifting Strength: Immeasurable (5th dimensional being)
Striking Strength: High Multiversal+ (5th dimensional being)
Durability: High Multiverse Level+ (5th dimensional being)
Range: High Multiversal+
Standard Equipment: None notable
Weaknesses: Tends not to take things seriously. If Superman tricks him into saying or writing the word "Kltpzyxm", he will be sent back to the 5th dimension, and can't come back for 90 days, however, this weakness was self-imposed, and Mxy can ignore it if he needs to.