the main character and the re-imagining of second-string X-Men characters. He introduced Mr. Sinister as a mutant-killing scientist with hypnosis and stealth powers in "The Tempest" (#46-49), German twins Fenris as mutant corporate criminals in "Cry Wolf" (#50-53), as well as Mojo and Longshot as a corrupt TV producer and a mutant felon, respectively in "The Most Dangerous Game" (#54-57). Both are of non-alien origin in this world and have the civilian names "Arthur Centino" and "Mojo Adams", a play on the names of their creators, writer Ann Nocenti and artist Art Adams. Further arcs were centered on Professor X (#58) and Deathstrike in "Shock and Awe" (#59–60). Lady Deathstrike possesses adamantium claws and regenerative powers. Vaughan also reintroduced Emma Frost's mutant team and Magneto, and established Ultimate Colossus to be homosexual. Vaughn's run was followed by Robert Kirkman, author of The Walking Dead and Invincible comic books. Kirkman's run was noted for adapting several major storyarcs from the regular X-Men series. These included Jean Grey's transformation into Phoenix, the arrival of Cable and Bishop, and the appearance of Apocalypse. Kirkman reintroduced Wolverine as an important character, and played with issues of team loyalty. Under his authorship, major characters such as Nightcrawler and Colossus left the team. His tenure also featured Cyclops' decision to turn Xavier's into a more traditional school and consequently disband the X-Men. When this was done an alternate team of X-Men was formed by Bishop as part of the upcoming fight against Apocalypse. After the Ultimatum storyline, nearly all of the X-Men were killed, and the team disbanded. After the events in Ultimatum the book, along with Ultimate Fantastic Four, was canceled after its 100th issue. A follow-up one-shot, called Requiem, was released and concluded the series' story. A new series, Ultimate Comics: X, debuted in early 2010 and featured Kitty Pryde, Wolverine's son, Jimmy Hudson and Jean Grey. Ultimate X-Men was then relaunched as Ultimate Comics: X-Men with writer Nick Spencer and artist Paco Medina. The series stars Jimmy Hudson, Kitty Pryde, Johnny Storm, Bobby Drake and Rogue. Commercial success Ultimate X-Men quickly established itself as a hit comic, lauded by critics and popular with the fans. The following table shows the development of comic sales in comparison to the mainstream titles. Characters X-Men Professor Charles Xavier, telepath and telekinetic, is the founder and patron of the X-Men. He is an idealist and a pacifist,