Maximum X-Men #21 was published by Panini France on September 1, 2005, as part of a series that began in 2004. Brian K. Vaughan and Sean McKeever write, and art comes from Jorge Lucas, Matt Milla and Mike Mayhew. It features Wolverine, Professor X, Rogue, Mystique and Forge, among 15 characters cataloged on VerseDB.