Issues nos. 63, 64, 85, 86, 154, 156, and 185 have flip slide of Chew (Image Comics), Viking (Image Comics), Witch doctor (Image Comics), Elephantmen: Man and Elephantman, Jupiter's Legacy 2 (preview), Kill or be Killed (preview), and Outpost Zero (preview), respectively.
Issues nos. 1, 2, 7, 19, 27, 48, 53, 92, 98, 100, 108, 127, 132, 167, and 171 were reprinted with 15th anniversary variant covers with variant previews at rear of issue. They were also collected in a 15th anniversary box set.