|Also known as||Marcus Flanagan|
|Origin||Langhorne, PA, USA|
Markus Flanagan is the actor who plays Agent Alonzo.
Markus made his acting debut in Biloxi Blues, and has gone on to appear in a large number of television shows, films, and made-for-television films, including appearances on Northern Exposure, Friends, Seinfeld, That 70s Show, Will & Grace, and Judging Amy, as well as a regular role on Nickelodeon's Unfabulous.
He appeared in Born on the Fourth of July and Walking to the Waterline with Brian Tarantina, in Cracker with Cristine Rose, in Melrose Place with Stacy Haiduk, in Fantasy Island with Malcolm McDowell, in The Practice with Clay Wilcox and John Thaddeus, in Providence with Christina Haag, in Numb3rs with Matthew John Armstrong, and in CSI with David Berman and Archie Kao.
In 2007, Markus wrote the book One Less Bitter Actor: The Actor's Survival Guide.