Guest's younger brother. 20 years old (everyone is set to 20). He is hiding the fact that he has a sibling from the Gwaek Expedition members.

Female. 20 years old. In a virtual marriage with Pingu. She suspects Gwaek is hiding something about having a sibling.

A master of backstabbing. 20 years old. Chester has a crush on Guest. He suspects Gwaek is hiding something about having a sibling.

Female. 20 years old. She suspects Gwaek is hiding something about having a sibling.

Ranked 1st in the 99-day speedrun. 20 years old. He suspects Gwaek is hiding something about having a sibling.

Dating Tako. 20 years old. He suspects Gwaek is hiding something about having a sibling.