Holds the highest rank after Guest. He is close to Guest, having known them since childhood. He is usually cold, but becomes even colder when it comes to mission-related matters.

• Knives, Hand-to-hand combat

Constantly gets scolded by Kai for playing too many pranks. He is a troublemaker in daily life and even jokes around during missions (though he controls himself in serious situations). He enjoys picking on Sera while pretending it was an accident.

• Hand-to-hand combat

Has a haughty personality but is surprisingly clumsy. She strictly follows orders from those of a higher rank. She struggles to avoid Leo's pranks. When she occasionally gets caught, she gets angry, but her ears turn red.

• Sniper, Rifle

Always maintains a self-controlled personality. He has a large build and is Drei's identical twin (the older brother). He is quick to judge situations and is excellent at devising strategies.

• Hand-to-hand combat

Less of a prankster than Leo, but still a major troublemaker. He is Zwei's identical twin (the younger brother). He is always breaking things. Since his build is similar to Zwei's, he wants to surpass his brother.

• Hand-to-hand combat, Pistol

The most normal person in the group. He always mediates fights. Despite his small stature, he is skilled with knives and guns, ranking in the top 3 of High Core's aces.

• Knives, Pistol

Always maintains a calm demeanor. As a medic, he sighs more often these days while treating his teammates. In particular, he intentionally makes the treatment painful for Zwei, who seems to get injured more than anyone else.

• Medic