The third "Ultimate X-Men" writer was Brian K. Vaughan, best known at the time for his work on "". His run was marked by the relative absence of Wolverine as 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.