Carl Zeitler has been working steadily in numerous productions throughout the Chicagoland area for the past decade. He has worked with Joliet Drama Guild, First Street Playhouse, Funhouse Productions, The Chanooka Center Stage Theatre Company, The Albright Theatre Company, Midsummer Theatre Troupe, n.u.f.a.n. ensemble, Riverfront Playhouse, Grove Players, Shakespeare on Clark, and GreenMan Theatre Troupe. Prior to that, it had been 18 years since he performed in a play, which he did at his alma mater of Oak Park and River Forest High School. He has in recent years taught a drama club at the elementary school where he is a reading specialist, and he has written and directed several short plays featuring students in first through fifth grade.

Carl made his GreenMan debut as the title character in Dracula in the fall of 2008. He served as Assistant Director on Pride and Prejudice the following fall. He also appeared in the GreenMan productions of Speakeasy or Die Hard (McClain, Tommy), Here's Looking at You...Dead! (Nick), Shakespeare in Hollywood (Oberon), Ravenscroft (Inspector Ruffing), How the West Was Done In (Victor/Kent), Love Throughout the Ages (Various), and The Matchmaker (Cornelius Hackl). He most recently appeared as the title character in Macbeth. He has served as co-playwright for Here's Looking at You...Dead!, How the West Was Done In, and the upcoming Smoking Gun. Carl was the Production Coordinator on Ravenscroft, How the West Was Done In, and The Matchmaker. Carl is in his fourth year as a member on the GreenMan Board of Trustees and currently serves as Publicity Chairman.

Elsewhere, Carl was a co-founder of Funhouse Productions and The Chanooka Center Stage Theatre Company. He produced Death By Chocolate and An Evening of One-Act Comedies for CCSTC and And Then There Were None for First Street Playhouse. He directed Sure Thing for CCSTC. Some of Carl's notable onstage roles include Rumors (Lenny), Bell Book and Candle (Shep), and The Nerd (Willum) for Joliet Drama Guild, The House of Yes (Anthony) for Funhouse Productions, Closer (Dan) for Riverfront Playhouse, Twelfth Night (Sebastian) for Midsummer Theatre Troupe, Death By Chocolate (Dick Simmering) at The Chanooka Center Stage Theatre Company, And Then There Were None (Blore) at First Street Playhouse, Sabrina Fair (Linus) at Grove Players, and The Taming of the Shrew (Petruchio) at Shakespeare on Clark.