merely the alteration or removal of color. Marvel Comics After the boom, Marvel Comics used variant covers on various occasions. When the Marvel Zombies universe first appeared in 2005's Ultimate Fantastic Four #21, the popularity spawned a limited series featuring several variant covers by Arthur Suydam. These variants reproduced classic Marvel Comics covers with an added zombie motif. To celebrate the inauguration of Barack Obama, Amazing Spider-Man #583 presented an all-new story teaming up President Obama and Spider-Man in "Spidey Meets the President!" The title featured five variant covers. In honor of Wolverine's 35th anniversary in 2009, Marvel released numerous Marvel titles with Wolverine Art Appreciation variant covers. The covers were done in styles reminiscent of Pablo Picasso, Salvador Dalí, and Andy Warhol. The first issues to feature a Wolverine Art Appreciation variant cover were Captain Britain and MI13 #12, Amazing Spider-Man #590, Hulk #11, Uncanny X-Men #508, and Secret Warriors #3. The Amazing Spider-Man (1963) No. 666 holds the record for the single issue with the most variants at 145 different covers. Outside of comics The practice of issuing variant covers has spread to some magazines, notably TV Guide, which has its own collector's market. TV Guide has published variants for various TV series, including Smallville, Dawson's Creek and Friends. Notes A varying number, decreasing from 20 issues for #1 to 15 issues for #6, itself revised from an earlier, more complicated formula. References Comics terminology Comic book collecting 1990s comics