Derek Mio is an American film and TV actor. He attended USC School of Cinematic Arts.[1] He is a fourth-generation Japanese-American. Mio is known for portraying the recurring character Wade Matthews on the ABC Family series Greek and his portrayal of Glenn in the 2013 movie G.B.F. (Gay Best Friend). He had a role in the NBC Series, Day One, which was scheduled as a mid-season replacement in 2010. One of his first roles was playing the lead in the PBS Special, Day of Independence. He also had a lead role in the indie feature, Purity, directed by NaRhee Ahn. In 2014, he played the role of Elliot on the Geek & Sundry web-series Spooked.
He portrays Donnie in the Best Buds in Lethal Weapon.