Tek Jansen is a fictional character featured on "The Colbert Report" and in a comic book series published by Oni Press. Jansen originated as a recurring joke in the form of a supposed self-published science fiction novel on the "Report", reportedly as a parody of Bill O'Reilly's 1998 novel, "Those Who Trespass". The character later appeared on the show in a series of animated shorts entitled "Stephen Colbert Presents Stephen Colbert's Alpha Squad 7: A Tek Jansen Adventure", with Jansen voiced by Stephen Colbert, and in 2007 became the protagonist of a five-part comic series.