A key issue noted for Onslaught revealed to be Charles Xavier. X-Men #54 was published by Marvel Comics on July 1, 1996, as part of a series that began in 1991. Mark Waid writes, and art comes from Andy Kubert, Cam Smith and Dan Panosian. This 44-page issue features Wolverine, Cyclops, Storm, Beast and Jean Grey, among 13 characters cataloged on VerseDB.