The youngest member of the team at 20[3][2], Yoon-gi is not fond at being addressed as potato. At a party with drinks involved, Yoon-gu falls asleep at the table. Viewing a video of Randy he is angered at his taunts to others. Demanding to know who he thinks he is, Yoon-gu states Jaekyung is going to tear him apart. Unsure of why he is so close to Dan, he desires to practice against Jaekyung. While there is a minor amount of envy, it is not taken out on Dan. Indeed Yoon-gu is elated and thanks Dan when he arranges for him to spar against Jaekyung.