A key issue noted for First appearance of Earthshaker. Spider-Girl #21 was published by Marvel Comics on June 1, 2000, as part of a series that began in 1998. Tom DeFalco writes, and art comes from Al Williamson, Christie Scheele and Pat Olliffe. This 36-page issue features Spider-Man, Mary Jane, Cassie Lang, Mary Jane Watson-Parker and Spider-Girl (Parker), among 14 characters cataloged on VerseDB.