| Issue | #617 |
| Published | August 2003 |
| Cover Price | $2.25 |
| Pages | 36 |
| Editing | Eddie Berganza; Tom Palmer Jr. (Associate Editor) |
| Characters | Mxy Twins |
| Genre | Superhero |
| Pencils | Lee Bermejo |
| Colors | Jeromy Cox |
| Characters | Superman; Mxy Twins (Dale and Delores; formerly Mr Mxyzptlk); Perry White; Alice White; Jimmy Olse; Lois Lane; Lex Luthor; Vladimir Putin; Prince Charles of England; Osama Bin Laden; Guardians of the Universe; Cosmic Boy; Saturn Girl |
| Synopsis | Mr Mxyzpltk has split into two being, the Mxy Twins. Now these twins wants to sell the Universal Encyclopedia at anyone who want to listen them, even if they don't want to listen. When Superman refuses to buy it, in exchange, they remove the gravity from Earth. |
| Genre | Superhero |
| Script | Joe Casey |
| Pencils | Charlie Adlard |
| Inks | Charlie Adlard |
| Colors | Tanya Horie; Richard Horie |
| Letters | Comicraft |