A key issue noted for First appearance of Dallas Riordan and First cameo appearance of Hallie Takahama. Thunderbolts #1 was published by Marvel Comics on April 1, 1997, as part of a series that began in 1997. Kurt Busiek writes, and art comes from Joe Rosas, Mark Bagley and Vince Russell. This 52-page issue features Spider-Man, Captain America, Thor, Black Widow and Nova, among 33 characters cataloged on VerseDB.