 In 2019, McFarlane wrote and drew "Spawn" #301, surpassing Dave Sim's 300-issue series "Cerebus" as the longest-running creator-owned comics series.The book, whose release date is October 2 of that year, earned McFarlane a place in the Guinness World Records, for which McFarlane was given a certificate on October 5, 2019 at the New York Comic Con prior to his panel, "The Road to Historic Spawn 300 and 301.