Premise: Bad Family () is a South Korean television series starring Kim Myung-min, Nam Sang-mi, Im Hyun-sik, Yeo Woon-kay, Kang Nam-gil, Geum Bo-ra, Kim Heechul and Lee Young-yoo. It aired on SBS from March 22 to May 11, 2006 on Wednesdays and Thursdays at 21:55 for 16 episodes.
Hypothesis: Lee Young-yoo was in all 16 episodes of Bad Family.