Michael Cassidy (born March 20, 1983) is an American film and television actor. He is best known for his role as Zach Stevens on The O.C. and as Tyler Mitchell on the TBS comedy Men at Work. He portrayed Jonathan Walsh on comedy People of Earth from the show's start in 2016 until its 2018 cancellation.
Known for Batman v Superman: Dawn of Justice 2016 Argo 2012 Smallville 2001 Army of the Dead 2021 ★ 6.1 Gail Daughtry and the Celebrity Sex Pass 2026
Tom Soursap McNoodleman Series ★ 7.2 Ballard 2025
Aaron Series ★ 6.9 Waco: The Aftermath 2023
Bill Johnston Series ★ 6.3 Found 2023
Christian Evans Series ★ 6.1 Fatal Attraction 2023
Clay Bishop ★ 4.9 Hypochondriac 2022
NP Chaz ★ 6.2 Army of the Dead 2021
Sgt. Kelly Series ★ 7.8 Resident Alien 2021
Dr. Ethan Stone ★ 5.4 Delivered 2020
Tom ★ 6.6 Breaking Fast 2020
Kal Series ★ 7.2 Mythic Quest 2020
Peter Cromwell Series ★ 7.4 Good Trouble 2019
Asher Bowen ★ 6.3 The Dare Project 2018
Johnny ★ 6.6 Dog Days 2018
Dr. Mike Stone ★ 6.8 Jingle Around the Clock 2018
Max Series ★ 8.2 Station 19 2018
Peter Series ★ 8.5 The Rookie 2018
Caleb Wright ★ 6.2 The Stray 2017
Mitch Davis Series ★ 7 The Guest Book 2017
★ 6 Batman v Superman: Dawn of Justice 2016
Jimmy Olsen Series ★ 7.1 People of Earth 2016
Jonathan Walsh ★ 5.3 Night of the Living Deb 2015
Ryan Waverly Series ★ 7.6 The Magicians 2015
James Series ★ 6.7 Stalker 2014
Brian Mitchell Series ★ 7.1 Masters of Sex 2013
Dr. Malcolm Toll ★ 7.3 Argo 2012
Jordan's Analyst ★ 5.6 The Guilt Trip 2012
Fake Andy (uncredited) Series ★ 6.6 Men at Work 2012
Tyler Series ★ 7.2 Scandal 2012
Travis Harding Series ★ 5.4 Are You There, Chelsea? 2012
Jonathan Series ★ 6.9 Happy Endings 2011
Male Lead Series ★ 8 Castle 2009
Greg McClintock Series ★ 7.1 Privileged 2008
Charlie Hogan Series ★ 5.6 Hidden Palms 2007
Cliff Wiatt ★ 5.3 Zoom 2006
Dylan West / Houdini ★ 6.4 Dare 2005
Johnny Series ★ 7.7 The O.C. 2003
Zach Stevens Series ★ 8.2 Smallville 2001
Grant Gabriel Series ★ 8 Law & Order: Special Victims Unit 1999
Derek Simpson 
