Thundercats Sourcebook #1 was published by DC Comics on January 1, 2003, as part of a series that began in 2003. Ford Lytle Gilmore writes, and art comes from Alé Garza, Alex Sinclair and Art Adams. It features Lion-O, Cheetara, Panthro, Tygra and Snarf, among 30 characters cataloged on VerseDB.