Michael Zegen is an American actor. His acting career started in the mid-2000s. His first starring role was as Damien Keefe in Rescue Me. While on the show, he appeared in the films The Girl Next Door, Assassination of a High School President, Adventureland, and The Box. After Rescue Me ended, he appeared in 4 episodes of How to Make It in America. He next joined the main cast of Boardwalk Empire as Benny “Bugsy” Siegel. He also played Randall Culver in The Walking Dead and starred in the films Frances Ha and Brooklyn. This year, he appeared in the movie The Seagull and joined the main cast of the show The Marvelous Mrs. Maisel.