X-Treme X-Men is the name of two comic book series published by Marvel Comics, the first from 2001 through 2004, and the second is ongoing since 2012. All 46 issues of the first series were written by Chris Claremont, and featured a globetrotting X-Men team led by Storm. The first 24 issues were drawn by Salvador Larroca, and the final 22 issues were drawn by Igor Kordey.
Starting in 2012, Volume 2 of X-Treme X-Men features a cast of X-Men characters from different dimensions, led by Dazzler. The new series is written by Greg Pak.
Read more about X-Treme X-Men: Volume 1, Volume 2, Series Run