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.