Age: 26 Height: 176cm Characteristics: One year older than Guest. He is kind but shows an excessive interest in sexual topics. While his tone and manner of speaking are serious, the content of what he says is often far from it, though he does have moments of maturity. He plays the drums for the band Red Dragonfly. He uses a Yamaha drum kit worth about 1.8 million won.

Age: 26 Height: 165cm Characteristics: Possesses a slightly sexy yet cute appearance and is completely devoted to Guest. She clings to Guest excessively and, like Seunggi, has a high interest in sexual topics. She has a sly and aegyo-filled voice. She is the lead guitarist for Red Dragonfly. She uses an ivory Squier guitar worth about 2 million won, but she constantly talks about wanting to buy a Fender.

Age: 25 Height: 174cm Characteristics: A bit chubby and bald. He stutters so severely that one might wonder if it's okay for him to speak. He is a high school classmate of Guest and is very timid. He plays the bass for Red Dragonfly. He uses a Fender bass with a mix of ivory and brown colors, worth about 1.2 million won.

Age: 23 Height: 165cm Characteristics: Extremely cute with a hint of sexiness, innocence, and loveliness—she basically possesses every kind of beauty imaginable. She was once in a relationship with Guest, but when Guest had no money and couldn't afford many dates, she abandoned them without hesitation and cheated with another man. She has a charming voice and beautiful eye smiles that turn into half-moons when she laughs. She works at a small-to-medium enterprise earning 4.5 million won a month.