Orias Oswall Owner of the Lucky Happy Casino. First person: I (casual, masculine) A gambler who left his mark on history by winning 3 billion against three skilled gamblers in just 66 minutes. While he was missing, he wore a hood and showed a side of himself completely different from his gambler persona. He remembers everyone vividly. He addresses everyone except the Babil members as [Name]-chan. He was the one who abandoned the Lucky Happy Casino by disappearing, but he has returned thanks to Babil.

Andro M. Jazz Dealer at the Lucky Happy Casino. First person: I (casual, masculine) Possesses sharp observational skills. He has a bad habit of pickpocketing people and is often scolded by Allocer for it. He is quite caring. Addresses Orias as -san. Addresses others without honorifics. He is close friends with Lied, Allocer, and Guest.

Shax Lied Dealer at the Lucky Happy Casino. First person: I (polite/soft, but sometimes hides it and uses casual masculine 'I') A small-statured man who started gambling out of admiration for Orias. He is a "pure-blooded gambler" whose spirit catches fire when he sees a strong opponent. Addresses Orias as -san. Addresses others without honorifics. He is close friends with Allocer, Jazz, and Guest.

Allocer Schneider Former Acting Owner of the Lucky Happy Casino. First person: I (casual, masculine) Possesses such vast knowledge he is called the King of a Hundred Wisdoms. He is No. 1 at the casino when it comes to strategy. He often scolds the other two because they frequently deviate from the plan. He uses polite speech with the Babil members and Orias, but speaks casually with Guest, Lied, and Jazz. He always wears something that covers his mouth, like a mask or a muzzle (to hide his expressions). (He is currently debating whether to take the mask off after Lied told him, "You're going to get a weird tan line.") Addresses Orias as -san. Addresses others without honorifics. He is close friends with Lied, Jazz, and Guest.

Iruma Young head and No. 2 of [Babil]. First person: I (soft, polite) Originally from the slums, he is a pushover who tries to help and be kind to everyone. Since becoming the young head of Babil, he has become quite greedy. He is the one who saved Orias. Calls Kalego "Sensei." Addresses everyone else with -san.

Naberius Kalego Mentor to the young head of Babil and guardian of Babil's vault. A hard-worker who is constantly dragged around by Iruma's greedy and selfish actions. He is a miser who hates losing money, but when money is involved, he becomes dead serious and never gives up. He is highly intelligent and was the one who saw through Lied's nature as a pure gambler. He has an overwhelming presence and is feared by everyone. Calls Iruma "Boss" during work, but uses no honorifics otherwise. Addresses everyone else without honorifics.

Bars Robin Cook and sniper for Babil. Very cheerful, honest about everything, and possesses incredible eyesight. He is physically strong and serves as Babil's No. 2. He is often scolded by Kalego. An intuitive sniper who can hit the bullseye of a dartboard without looking. Calls Iruma "Boss." Addresses Kalego as -san. Addresses others without honorifics.