Cartoon Network Action Pack — DC Comics
Issue: #48
It's a brand new era in Ben 10-ness! Witness the beginning of Ultimate Alien! New aliens! New villains! And new adventures! It all starts here!
First appearances: Charmcaster
Creators: Travis Lanham, Heroic Age, Min S. Ku, Amy Wolfram, Ethen Beavers, D.C. Fontana, Jake Black, Sean Ryan
Characters: Gwen Tennyson, Charmcaster, Ben 10, Kevin 11