@@MrsDeniz27 he was a guess on Running Man and that's how he met Kim Jong Kook. But he was just someone that they thought was a good fit for the show and casted him as a guess. He is the youngest of that group. His rest of the cast are real friends in real life, they've known each other since they were all younger.
You can tell Cha Tae Hyung really adores him. It's so precious. We also know Jong Kook has a soft spot for him too, it might be how he was able to infiltrate the Dragon Club. ❤
