Kevin Warren Bigley (born October 5, 1986) is an American television and film actor, best known for playing rookie paramedic Brian Czyk on the USA Network series Sirens (2014-2015) and as Luke Crossley in the Prime Video series Upload (2020-2025).
Bigley was born in Yuba City, California, and studied acting at The Theatre School at DePaul University, in Chicago, Illinois. He began learning comedy as a defense mechanism to stave off bullying. Bigley began his acting career in San Francisco, California. He appeared in a seven-month run of "Killer Joe" at Profiles Theatre in Chicago. He also performed in "A Separate Peace" at Chicago's Steppenwolf Theater.
After working with actor Vince Vaughn on a TV pilot, Bigley moved to Los Angeles in 2010 and worked jobs including catering for a Jerry Springer game show, Baggage, on the GSN. He landed a part in Vaughn's 2011 movie The Dilemma and went on to appear onscreen in film and television, including on the series Bones, ' and Chicago Code before winning the role of rookie EMT Brian Czyk the USA Network series Sirens.
In 2019, Bigley was cast to play a recurring character in the Amazon Original series Undone, then later in 2020, he was cast as a main character, Luke, in the science fiction comedy Upload, another Amazon Original.