Derek Mio is an American actor. He works both on film and television. After playing small roles, he first gained recognition for playing recurring role Wade Matthews on the television series Greek. He next appeared in the NBC series Day One. He then landed a starring role in the PBS television special called Day of Independence. After this, Mio starred in the independent film Purity. In 2013, the actor starred as Glenn in the movie G.B.F. He continued his career, landing the part of Elliot in the Geek & Sundry web series Spooked. He recently played the role of Chester Nakayama in the AMC series The Terror.