iPartment Season 3 Paroday

This clip is epic. I believe it is the opening episode of Season 3 of iPartment. The paradied characters are Hattori Hanzo, Dongfang Bubai, Lu Bu, and Diao Chan. I do not know who Hattori Hanzo is, but I recognize Dongfang Bubai from one of Jin Yong's novels and Lu Bu is from Romance of the Three Kingdoms.