In 2011, Oh was cast in a supporting role in Sector 7, a 3D action film about a creature lurking on an oil rig, then appeared in the Korea-China-Japan co-production Strangers 6 and medical drama The Third Hospital (both in 2012). He also played ousted guard Baek Dong-soo in The Grand Heist, a Joseon-set comedy heist film about the theft of ice blocks from the royal storage.
