Main Characters and Their Allies
Protagonists | Raizel Knights | Ye Ran High School | Lukedonia | Korean Government Agency
The Union
Thirteen Elders | Assassination Squad | DA-5 | Cerberus | Maduke's Werewolves | Traitor Nobles | Other Union Members
Werewolf Faction
Muzaka's Werewolf Faction
Dr. Crombel's personal soldiers. They are often seen throughout the series battling the members of the Raizel Knights.
Assassination Squad
- Evil Counterpart: Could be viewed as such for the Raizel Knights as the two teams are always fighting each other throughout the series.
- Killed Off for Real: By the end of the series, they're all dead.
Yuri
A modified human who is introduced as a member of the 12th Elder's faction as Dr. Aris' assistant. He reveals himself to be a mole for Crombel during Cerberus' war against the Raizel Knights, and provides his boss with many research samples.
- Badass in a Nice Suit: Always seen wearing a nice suit. Even in combat.
- Battle Butler: To Dr. Arith.
- Energy Weapon: From his fingers. Apparently with Power Nullifier.
- Faux Affably Evil: Puts on a normal person act when he's not acting evil.
- Four Eyes, Zero Soul: Just like his real boss.
- Love at First Sight: To Seira.
- The Mole: He is introduced working for the 12th Elder when he's actually been working for Dr. Crombel.
Mary
Voiced by: Hitomi Nabatame (Japanese), Suk-Geyong Jeon (Korean)
Crombel's personal modified human bodyguard early in the story. Mary was considered the squad's weakest member, but still proved to be a worthy enemy for Rai and company early on.
- Curb-Stomp Battle: On both the giving and receiving ends.
- Curtains Match the Window: Blue-hair with blue-eyes.
- Dark Action Girl: She is the first female combatant to appear in the series. She is very stoic and shows no mercy towards enemies to the Union.
- Ms. Fanservice: A group of men on the street comment on her good looks.
- Red Oni, Blue Oni: Guess which one?
- Spell My Name With An S: Her name is also often romanized as "Marie".
- Stripperific: Wears a short skirt and an unzipped crop top exposing her cleavage, midriff and legs.
- Worf Effect: She's built up to be a major threat early on, but ends up having a surprisingly early death.
Jake
Voiced by: Tōru Ōkawa (Japanese), Seong-Jun Bang (Korean)
Mary's modified human partner. Having previously killed a large sum of Union members, Jake was scouted out by Crombel, and Mary, to see if he was skilled enough to become a true member of the Assassination Squad.
- Jerkass: To anyone he deems lesser than himself (which is a lot of people).
- One-Winged Angel: Towards the end of his life, he modifies himself further allowing him to achieve a stronger combat form.
- Sadist: He likes to kill people just to display his strength. Even after Marie told him not to kill Shinwoo & co. until the fourth kid (Rai) showed up, he still tried to make them suffer.
Mark
A modified human of the squad who works as an undercover agent. After finding his remains, Crombel tasks him to take the disguise of M-24 in order to infiltrate Frankenstein's research labs to acquire needed data for his research.
- The Mole: The role he was given by Crombel in order to gather information from Frankenstein's lab.
- Voluntary Shapeshifter: Currently taking the form of M-24.
Bonerre
A member of the squad introduced working for the 10th Elder, Rostere. He joins up with Yuri to catch the Raizel Knights trying to plant evidence that would incriminate Crombel's work to the rest of the Union.
- The Mole: Similar to Yuri, Bonerre was introduced working for Rostere when he's actually been working for Dr. Crombel.
- We Hardly Knew Ye: He's killed off in the same arc he was introduced in.
Kalvin
A member of the squad specializing in poison usage. Kalvin stands alongside Yuri and Mark when they are attempting to steal the last of Frankenstein's research.
- Enfant Terrible: Seems like an adorable kid, but he's a jerk like the rest of the squad.
- Master Poisoner: His forte in battle.
- We Hardly Knew Ye: He's killed off in the same arc he was introduced in.
