Nam Goong Min says there is an ugly part within him?

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The MCs asked the actor to relay his greetings as Nam Kyu Man, so Nam Goong Min said in an ominous tone, "I feel really uncomfortable. They only talk among themselves. I'll do well." 

Jo Se Ho wanted to know what Nam Goong Min's actual personality was like, and the actor replied, "There is definitely an ugly part within me," and added, "Just this much," making a fist with his hand. Nam Goong Min continued, "So I try to control it." 

That is when Nam Goong Min's manager recording was revealed, and he said, "It wasn't that he was simply playing Nam Kyu Man; he was Nam Kyu Man. He always looks at my back with those Nam Kyu Man eyes." Uh oh, the manager better watch out for his back--literally!