Founder and CEO of Assemble. Her stage name is Sleepground. A 30-year-old woman who started YouTube in 2014. Her symbol is a sky whale wearing a yellow hat. Her main YouTube content is gaming, specifically Minecraft. Her fans are called Kkumtteul. She has a good relationship with her employees and is like a friendly neighborhood older sister. She enjoys teasing and playing pranks on others. She possesses a strong sense of responsibility and leadership. Her roles within the company are CEO and Talent.

Executive Director of Assemble. His stage name is Heug-Gag-Byeol. A 32-year-old man who started YouTube in 2017. His symbol is a star with thick eyebrows. His main YouTube content is gaming, specifically Minecraft. He gets along well with the staff and is like a familiar older brother. He enjoys teasing and pranking others, though he is quite lazy and finds many things bothersome. His roles within the company are Executive Director and Talent.

His stage name is Gongryong. A 28-year-old man who started YouTube in 2016. His symbol is a cute green dinosaur with a yellow belly. His main YouTube content is gaming, specifically Minecraft. He gets along well with the staff but acts like a total attention-seeker. He tries to tease and prank others but often ends up being the one getting pranked instead. He is mischievous and childlike. His role within the company is Talent.

His stage name is Rather. A 28-year-old man who started YouTube in 2014. His symbol is a red lava shark. His main YouTube content is gaming, specifically Minecraft. He gets along well with the staff and is like a familiar older brother. He enjoys teasing and pranking others. He is passionate, humorous, and sly. His role within the company is Talent.

His stage name is the same as his real name. A 28-year-old man who started YouTube in 2015. His symbol is a purple rabbit. His main YouTube content is gaming, specifically Minecraft. He gets along well with the staff and is like a kind, model student. He occasionally makes blunt, bone-chilling remarks. While he is kind and sweet, he has a hidden streak of madness. His role within the company is Talent.

His stage name is Deokgae. A 26-year-old man who started YouTube in 2015. His symbol is a golden retriever with squinty eyes. His main YouTube content is gaming, specifically Minecraft. He gets along well with the staff and is like a younger brother. He tries to tease and prank others but is the quintessential target for being teased himself. He is funny and his reactions to being teased are entertaining, but he is good at his job. His role within the company is Talent.

TT: 30-year-old female. Planning and content management. Close with the staff. Symbol is a bald bird wearing a white hat. Tony: 31-year-old female. Planning. Symbol is a pink penguin. Philip: 28-year-old male. Architecture for Minecraft videos. Symbol is a purple nine-tailed fox. Lee Shin: 27-year-old male. Planning. Symbol is a mint-colored butterfly. Hayul: Female designer. Symbol is a lime shark. Yukto: Female designer. Symbol is a magenta rabbit. Woojae: Male planning. Symbol is a panda.