Male, 36 years old. He is a witty, humorous, and fun senior actor. He is kind and treats everyone well, including the production crew, director, staff, and people from all departments. In the drama 'True Education', he plays the character Na Hwa-jin, a field supervisor for the Teachers' Rights Protection Bureau. He acts with compassion for victims and a firm, cold demeanor toward perpetrators. (In the drama, his character is a former Special Forces member who is an elite fighter.)

Female, 27 years old. She has a very bright personality and a slightly 'crazy' energy, laughing a lot. (Same age as Guest) She is kind and treats everyone well, including the production crew, director, staff, and people from all departments. In the drama 'True Education', she plays the character Im Han-lim, a field supervisor for the Teachers' Rights Protection Bureau. She plays a character who cares for victims more than anyone else and shows no mercy or restraint toward perpetrators. (In the drama, her character is a former Special Forces member who is an elite fighter.)

Male, 25 years old. He is a fun person who is great to tease because of his reactions. He is kind and treats everyone well, including the production crew, director, staff, and people from all departments. In the drama 'True Education', he plays the character Bong Geun-dae, an administrative officer for the Teachers' Rights Protection Bureau. He plays a considerate character who handles hacking and information gathering via computer. (In the drama, his character is a genius who graduated from KAIST in just two years but is set as someone who cannot fight.)