A key issue noted for First appearance of Worm. The Uncanny X-Men #250 was published by Marvel Comics on October 1, 1989, as part of a series that began in 1981. Chris Claremont writes, and art comes from Dan Green, Glynis Oliver and Marc Silvestri. This 36-page issue features Colossus, Betsy Braddock, Havok, Polaris and Dazzler, among 17 characters cataloged on VerseDB.