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
A club that was formed to act as Rai's personal bodyguards during his stay on Earth's surface world. Official club members include a cooperation between several modified humans, and Lukedonian Nobles. Club members work as security guards at Ye Ran High School under their de-facto boss, Franky.
The Raizel Knights
- Badass Crew: Without a doubt a powerful force to be reckoned with in their own right and they're continuously growing more powerful after each arc. Their only main problem is that they seem weak due to the fact that they're going up against enemies who are far out of their league.
- Honor Before Reason: Even though hiding themselves for the upcoming battles would be a wiser choice of action to ensure their survival, they all refuse to listen to Frakenstein and want to stay beside Rai even if it means being killed.
- Older Than They Look: While Tao, Takeo, and M-21 look their age, Regis and Seira are both beings that have been living for a couple centuries.
- Teeth-Clenched Teamwork: Averted. Due to Takeo's and Tao's history working together in D-5, they make an exceptional team and now with M-21 completing the trio; they're unified strength is enough to take on adversaries far stronger than each of them individually.
- Three Plus Two: Tao, Takeo, and M-21 are the three while Regis and Seira are the two.
- Took a Level in Badass: Undoubtedly. Every passing arc they're all learning from their battle experiences and rapidly evolving after each battle. Unfortunately for them, that just isn't enough and some of them are forced to use other methods to close the gap.
- Undying Loyalty: Towards Frankenstein (since he's letting them stay at his hosue) but more specifically, towards Rai. At first, the group were only allied with Rai due to the fact that he was Frankenstein's master, making him their de facto leader. Halfway through the story they learn that Rai's powers require him to use his lifeforce and that he's been slowly draining away his life to protect those close to him, including all of them. Needless to say they were all pretty shocked about it and when questioned on why he would do such a thing, Rai simply answered that if protecting the lives that all of them had built up to this point only required him to give up his life, he would gladly do so. It was at that moment that the Raizel Knight's were officially formed and each of them highly respect and admire Rai for all that he has done for them.
- Vitriolic Best Buds: All of the guys eventually become this for one another after several arcs of character development and life or death struggles.
Modified Humans
M-21
Voiced by: Hisafumi Oda (OVA), Kosuke Onishi (anime, Japanese), Chris Hackney (English)
A modified human with the role of close-quarter combat amongst the Raizel Knights.
M-21 was part of the M-Series experiment carried out by Dr. Crombel. He, along with M-24, were the only survivors of the "failed" test, but his true strength, later discovered to be an implanted heart of a Werewolf, is awakened by Rai during a battle against an Infected. After M-24's death, he is taken in by Rai and Frankenstein, and is currently employed as a security officer of Ye Ran High School.
- Breakout Character: M-21 started off looking like a villain-of-the-week side-character, but has easily had some of the most development, and growing character popularity, of the series.
- Can't Catch Up: Despite his growing powers, M-21 continues to end up in fights where he goes up against someone who turns out to be a lot stronger than him.
- Chick Magnet: Due to his Mr. Fanservice moments, many girls end up looking in his direction.
- Curb-Stomp Battle: Is on the receiving end of these distressingly often. But finally averted in chapter 406, where he dishes one out to the agents of the Union. It's even more one-sided than the fights where he's on the other side of this trope.
- Dark and Troubled Past: Alongside M-24, the two of them were the only survivors of the M-series experiment that was conducted by Dr. Crombel.
- Determinator: Determined to make Crombel pay for all the people that died in the M-series experiment.
- Fighter, Mage, Thief: The Fighter among the modified human trio. He is the one in charge of close combat and have greater physical offense stat compared to the ex-DA-5 members. It's just that their enemy is too strong that they three look equally squishy.
- Our Werewolves Are Different: He's a human that has the ability to use Werewolf powers due to the Werewolf heart that was implanted within his body.
- Redemption Earns Life: Ditching the Company for Rai's group has resulting him in living a much better life.
- Redemption Promotion: Goes from a failed experiment, to a respected member of the RK-5.
- Scars Are Forever: He still keeps that scar on his mouth after all this time.
- Time to Unlock More True Potential: Actually a logical version of this trope. As M-21's body attunes itself more and more to the werewolf heart implanted in him, he gains access to more and more of a true werewolf's strength.
- Took a Level in Badass: Over the course of the series, he goes from the weakest supernatural character to being strong enough to effortlessly manhandle three Union agents, two of whom were stronger than Tao and Takeo who were in turn stronger than him.
- Walking Spoiler: Apart from starting off as an enemy, it's tough to go into further detail about M-21 without giving away that his powers stem from his implanted Werewolf heart.
- Weak, but Skilled: To be fair, this is primarily because he keeps ending up having to fight against opponents who completely out-class him. He's still usually able to put up a fight given his Werewolf powers.
- You Are Number 6: Number 4 Of Raizel Knights, against his will.
Tao
Voiced by: Masatomo Nakazawa (Japanese)
A modified human who acts as the tactician of the Raizel Knights.
Tao started off in the Union as part of the DA-5 squad, but broke away from the group after learning the truth that he, along with the rest of the lower DA-5 members, were to be used as sacrifices to give their leader, Krantz, more power. Tao takes the offer to join Rai and Frankenstein's side, and now currently works as a security officer at Ye Ran High School.
- Agent Peacock: Wears eyeshadow, nail polish, and lipstick, and still can kick asses. Subverted in that his specialty isn't combat itself, but Mission Control And even on battlefield, his specialty is long-range combat or traps using his whips/wires.
- Bunny-Ears Lawyer: For all his quirk, he is essentially Frankenstein's Number Two.
- Fighter, Mage, Thief: The Mage among the modified humans trio. Provides Mission Control with the gadgets he makes by himself, and even when he's on the battlefield, fights from long distance with his electrified whip.
- Friendly Enemy: Even against his enemies, he enjoys having a chat with them.
- Heel Realization: During his time on the DA-5, Tao eventually learns that he was going to eventually be used as power-food to power up Krantz.
- Lightning Lash: He wields a whip in combat which allows a flow of electrical current to shock the bound enemy.
- Mission Control: As he is the brain of RK-5, he occasionally enters fights only when his radio briefings no longer help.
- You Are Number 6: Number 1 Of Raizel Knights, being the founder.
Takeo
Voiced by: Takeo Ōtsuka (Japanese)
A modified human who acts as the marksman support of the Raizel Knights.
Like Tao, Takeo started off as a member of the Union's DA-5, but was tricked into believing that the Union wouldn't kill his sister if he followed Union orders. After the reveal that he never actually had a sister, and was just Dr. Aris manipulating him, Takeo switches sides, and now currently works as a security guard at Ye Ran High School.
- Badass in a Nice Suit: In chapter 454, alongside the other Raizel Knights who came to back M-21 up.
- Fighter, Mage, Thief: The Thief among the modified human trio as he is the one with highest agility.
- Fragile Speedster: Not capable of doing much damage on his own, and can't take as much punishment as most of the cast, But the guy is so fast his standard battle strategy is to combine *Click* Hello and Stealth Hi/Bye and spam it.
- Heel–Face Turn: Joins Rai's side after realizing that the Company, and Aris, were manipulating him.
- Hitman with a Heart: Is easily one of the nicest people in the series when he's not busy head-shotting his targets.
- Improbable Aiming Skills: Okay, we know he's a sniper.. But it's still epic awesome when he did all that sniping in the middle of acrobatic moves. To begin with, it's he's not only known for is sniping ability, but also, his speed.
- Long-Haired Pretty Boy: A good-looking boy with very long hair—past his knees.
- Redemption Earns Life: One of the only surviving DA-5 members.
- You Are Number 6: Number 2 Of Raizel Knights.
- What You Are in the Dark: What kept Frankenstein from killing him was Takeo's last request—to save the innocent children that didn't deserve to die.
Lukedonia Nobles
Regis K. Landgre
Voiced by: Akihisa Wakayama (Japanese)
The Noble heir of the Landegre Clan, and Gejutel K. Landegre's grandson.
Regis transfers to Ye Ran High School in order to investigate the recent problems occurring in the human world, and ends up taking residence at Frankenstein's house. He joins the Raizel Knights after gaining respect for the modified humans within the group.
- Compulsory School Age: Because he looks like a teenager, he can go to high school even though he's 199 years old.
- The Fighting Narcissist: He tends to berate opponents whom he feels are inelegant.
- Lightning Bruiser: He lands a powerful punch and can move so fast that it looks like teleportation.
- Like Brother and Sister: He and Seira care about each other as if they were real siblings.
- The Napoleon: Ikhan once mentions how he feels an attachment to Regis due to the fact they're both short. Regis is not pleased with this.
- New Transfer Student: He and Seira get into Ye Ran High School under the pretense of being transfer student.
- Next Tier Power-Up: He finally has his family's Soul Weapon, Regasus, passed down to him during a fight against the Werewolves.
- Not So Stoic: While he always tries to be elegant all the time, he's not above shouting his displeasures when they come up.
- Pint-Sized Powerhouse: He's one of the shortest characters, but he's still a noble and a strong fighter.
- Really 700 Years Old: Like with every noble, he's older than he looks. He's 199 years old, but looks like a 13-year-old.
- School Uniforms are the New Black: He almost always wears his school uniform for any situation.
- Tsundere: Despite constantly rejecting his teammates, he clearly enjoys being included as part of the RK-5.
- You Are Number 6: Number 3 of Raizel Knights, without his consent.
Seira J. Loyard
Voiced by: Ai Kayano (Japanese), Brianna Knickerbocker (English)
The Noble head, and last remaining member, of the Loyard Clan.
Similar to Regis, Seira transfers to Ye Ran High School in order to investigate the recent problems occurring in the human world, and ends up taking residence at Frankenstein's house. She eventually joins the Raizel Knights.
- Affectionate Gesture to the Head: When she's proud of Regis, she pats his head.
- Celibate Heroine: She never shows interest in romance and rejects Rael's marriage proposals.
- Compulsory School Age: She's 217 years old, but her young appearance lets her go to high school.
- Feminine Women Can Cook: Frank often compliments her great cooking, and she seems very happy about it.
- Hime Cut: She has full bangs, bra strap length sidelocks, and classic-length straight hair. This suits her traits as a clan leader and Yamato Nadeshiko.
- Insistent Terminology: Seira insists on addressing Rozaria with Rozaria-nim (Rozaria-sama in the anime) despite the latter's preference to be addressed with a less-formal Unni/Onee-san.
- Lady of War: She has a calm, elegant aura and wields her Sinister Scythe gracefully.
- Like Brother and Sister: She and Regis have known each other for a long time and regard each other as family despite not being blood related.
- Mystical White Hair: She's a noble clan leader with beautiful white hair.
- New Transfer Student: She and Regis pretend to be transfer students to get into Ye Ran High School.
- Really 700 Years Old: She looks like a young woman, but is 217 years old.
- School Uniforms are the New Black: Like Regis, her school uniform is her default outfit.
- Sinister Scythe: The Death Scythe of the Loyard clan. In-universe, it's considered to be the inspiration for the Grim Reaper's scythe from human myths.
- The Stoic: She doesn't let her emotions show in her face.
- Sugar-and-Ice Personality: She's composed at all times and rarely smiles, but like Rai, is not emotionless and cares for her comrades.
- Unwanted Harem: Some of Shinwoo's friends assume she has one. She's not interested in any of them.
- Waif-Fu: Her fight with the 7th Elder is really her first true hand-to-hand fight against somebody of similar power, and really showcases how much more acrobatic her fighting style is.
- Yamato Nadeshiko: A reserved Lady of War with a Hime Cut and cooking skills.
- You Are Number 6: Number 5 of Raizel Knights, without her knowledge, although she doesn't mind. As of chapter 454, she's fully aware of it, and she's even dressing up like the others.
- Young and in Charge: Young relative to the other clan leaders; She is one generation younger than them, but she is still a clan leader.
Rael Kertia
Voiced by: Daishi Kajita (Japanese)
The Kertia clan leader's younger brother. Unlike other Nobles outside clan leadership, Rael had a portion of the family Soul Weapon passed down to him. In addition to having a huge crush on Seira, Rael has also become an honorary member of sorts to the Raizel Knights despite his initial hostilities.
- Big Brother Worship: Rael cares more about his brother than Soul Weapon and is willing to hand it to his brother if he needs it.
- Hopeless Suitor: He wants to marry Seira who in return wants nothing to do with him.
- Jerkass : He starts off as a major one, but slowly switched to a Jerk with a Heart of Gold once Character Development started to settle in.
- Like a God to Me: Regis mentioned that his brother, Rajak, is religion to Rael.
- Ninja: Complete with Super-Speed, No, I Am Behind You and Doppelgänger Spin.
- Noble Bigot: He looks down on humans and respects modified humans even less, but he is still loyal to Lukedonia, respects his brother, and genuinely cares for Seira (albeit in a wrong way, if at first).
- Spare to the Throne: After his older brother is killed, he becomes the new clan leader.
- Spoiled Brat: One may wonder how can someone as calm, wise and mature as Rajak and Ragar is related to him. But when the audience saw the flashbacks, that Ragar gives him Grandia just because he doesn't want Rael to not inherit anything from him when he died and Rajak casually considering giving Rael the position of Clan Leader and the Soul Weapon like giving candy, it's not hard to see why he is so bratty since both his father and brother spoiled him so much.
- Took a Level in Kindness: He's presently a much nicer character than when he's first introduced.
Karias Blerster
Voiced by: Ooki Sugiyama (Japanese)
The current head of the Blerster clan who is seen to have a child, and playful-like personality. Karias wants to leave Lukedonia in order to help with the battles going on in the human world, and finally gets his wish after learning about the Ignes incident. Along with Rael, Karias eventually becomes an honorary member of the Raizel Knights that supports them on missions.
- Bunny-Ears Lawyer: He's a funnyman, but nevertheless a deadly fighter.
- The Casanova: One of the first thing he does in Yeran High School is to hit on the girls.
- Improbable Aiming Skills: Even more so than Takeo. God knows from how far he shot the 3rd Elder and Lunark, yet it doesn't miss. He was in the middle of the air when he pulled his bow, on top of that. Of course, it was the hint he is the enemy for the 3rd Elder, because only the Clan Leader of Blerster clan that is capable of doing so.
- Sensor Character: Most characters in this webtoon have this ability in a varying degree, but Karias himself notes that even among nobles, he is well-known for greatly surpassing other nobles in this matter. It is possible that this is his clan's specialty other than their Improbable Aiming Skills.Karias: I am the leader of Blerster clan, and even among the Nobles, I am renowned for my ability to detect enemy's presence.