 Theakston built his portfolio and expanded to paperbacks and magazines, including Berkley Books, Dell, Ace, DAW, Zebra, Tor, St. Martin's Press, Warner, Ballantine Books, Belmont-Tower, "If" and "Galaxy Science Fiction".He was an original member of the Crusty Bunkers, and worked closely with Neal Adams at Continuity Associates between 1972 and 1979, producing animatics, storyboards, comic art and various commercial advertising assignments.Among other various assignments were jobs for Marvel Comics, DC Comics, Image Comics, Warren Comics, "New York Daily News", Archie Comics, as well as periodicals magazines including "National Lampoon", "The New York Times", Kitchen Sink, "Playboy", "TV Guide" and "Rolling Stone".