Actors Song Joong Ki and Lee Kwang Soo traded some friendly banter when they appeared on MBC's 'Entertainment Relay' during a shooting for their newest drama, 'Nice Guy'.

Song Joong Ki berated his co-star and former 'Running Man' castmate, saying, "The staff is working hard, why are you making so many NGs?"

"If you appear on 'Entertainment Relay', the ratings are going to go down," he concluded.

Concerning his character for 'Nice Guy', he said, "In reality, I'm 7 parts nice guy to 3 parts bad guy," he revealed. "If a person is only too nice, then he's not very attractive."

Great to see their�on set camaraderie.