Gaetano Marco "Guy" Nardulli (born May 31, 1974 in Chicago, Illinois) is an American actor and producer who is most associated for his character role as a street fighter turned MMA professional fighter in the 2006 movie -And Then It Breaks with actress Anne Dudek. The Horror Vault Vol.1 (2008), which was released as a compilation of nine horror short stories contains the 2005 movie short thriller Alone in which Nardulli plays Detective Wiley. Guy is well known for his "strong-arm" portrayals as detective and law enforcement characters, military, mobster and criminal roles in movies and television. His most recent television work is related with the 2015 television series The Last Ship in two episodes, "Long Day's Journey" and "Alone and Unafraid". Guy also appears in a reoccurring role on Criminal Minds as Detective Walker. He was nominated for Best Supporting Actor for the 2013 Utah Film Awards for his role as Antonio Sorrento for Proper Manors. Nardulli also received a second nomination as part of the Best Ensemble Nomination, also for Proper Manors.
Nardulli was a collegiate football player for Elmhurst College and a two-time All-American for the Bluejay football team He traveled to Italy and played football on the Italian Football League with the Bolzano Giants during the 1996/97 season. He returned to the States and played on the Regional Football League with the Ohio Cannons and then the Quad City Steamwheelers during the 1998 season and returned to his hometown to play with Chicago Thunder Football League He later joined the Chippendales dance troupe and then made his way into the acting industry, auditioning for roles in television and film.