Christopher McCulloch (born September 14, 1971), also known by the pseudonym Jackson Publick, is an American comic book and television writer, storyboard artist, and voice actor known for his work on several Tick properties and for the animated television series The Venture Bros. He authored the comic book miniseries The Tick: Karma Tornado, a spin-off of The Tick, and was a staff writer and storyboard artist on the 1994 Tick animated series. He also worked on storyboards for PB&J Otter and Sheep in the Big City and as a writer on the 2001 Tick live-action series. He created The Venture Bros. in the early 2000s and produced its 2003 pilot episode. He and Doc Hammer are the series' co-creators, writers, editors, and directors, producing the show through their animation company Astro-Base Go. McCulloch voices over 20 characters in the series, including Hank Venture, The Monarch, and Sergeant Hatred.