Though distant and obsessed with his work, he cares deeply for his friends and servants. He's dedicated his life to those less fortunate, but part of it is to satisfy his personal pride. Stubborn and arrogant, he has only opened up to Al and Molly. And despite seeing Al as his good friend, he's always been jealous of him...
- Armor-Piercing Question: Is on the receiving end of one from Hyde. Who is really guilty?
- Break the Cutie: His backstory has not done him any favors. Hyde seems to be trying to intentionally cause this, guilt-tripping him to remain in control.
- Bi the Way: According to the author.
- Enemy Within: Hyde is not a pleasant person to be sharing head space with.
- Fatal Flaw: Jekyll's pride is noted to be a major flaw, as is his habit of selective memory, intentionally forgetting or repressing his darker urges.
- Ho Yay: Between him and Al. Henry's feelings are strong enough, he can even influence Hyde with them, stopping him from killing Al twice.
- Jekyll & Hyde: Jekyll originally created the serum to figure out what humans did with the 70% of their brain not in use. He gained an evil split personality that began as a voice in his head.
- The Woobie: Considering his backstory, and the events of the comic...
The child of an unfortunate affair, Al is the bastard of an aristocrat from the Utterson family. Most of his early childhood was spent with his half-sister and mother until her death. He and Henry became good friends during his time as his valet, but when he left the household, Al returned the same cold attitude Henry gave him. Despite his bitter front, he has his own ways of showing kindness...
- Bi the Way: Technically he is a biromantic demisexual.
- Locked Out of the Fight: In the morgue, is knocked out very quickly, while Hyde takes off after the attacker alone. Not that Hyde needed the help, as the ensuing bloodbath proved.
- No Yay: Does not appreciate Hyde's interest in him.
- Stoic Woobie: Hits woobie status with Molly's death, but doesn't show much of his grief afterwards, throwing himself into solving the case and attempting to save Henry.
- Worthy Opponent: At least in Hyde's opinion. Although it's hard to say if Hyde genuinely considers this, or is just making excuses over Henry not letting him hurt Al.
Spending most of her early childhood on the streets with her half-brother Al, the two were eventually taken in by Jekyll. Her kind heart and bright personality have always made her the big sister sort of character among the other servants. When Al left the household, she stayed behind, as one of the few people Henry still trusted.
- Asexuality: She is asexual, though she harbored a major crush on Henry.
- Came Back Wrong: Somehow has been resurrected by Lanyon, but with no personality or memories. Chapter 25 reveals Jekyll's HJ7 drug is responsible.
- Deadly Hug: Hugs an upset Henry in chapter two. Unfortunately, Hyde takes control again in the middle of it and his weapon of choice happens to be in arm's length. Henry and Molly don't realize what's happened until she's already dead.
- Impaled with Extreme Prejudice: On Hyde's cane sword no less.
The alter ego who surfaced after the many experiments Jekyll performed on himself. Though he first appeared as a voice in Jekyll's mind, he became fully capable of controlling Jekyll's body. Cunning and prone to mischief, his intentions and motives are unknown.
- Cluster F-Bomb: Has his moments.
- Depraved Bisexual: Technically a depraved pansexual, and it's more incidental than the cause of his depravity.
- Face Palm Of Doom: Delivers one to one of his victims. Subverted, in that it's only fatal because Hyde slammed the victims head through a fence picket.
- Ho Yay: Invoked; he flirts with Al considerably more than necessary. Jury's still out on what exactly his intentions are. But considering the events in chapter 18, it's safe to say his interest is sexual.
- Hyde Plays Jekyll: Literally in the first half of chapter 10. Fortunately, Al notices the small differences, and quickly calls him out on it.
- Jekyll & Hyde: Hyde is Jekyll's evil split personality that began as a voice in his head.
- "Reason You Suck" Speech: Delivers a fairly devastating one to Henry, and later to Al.
One of the biggest names in Scotland Yard, he is one the officials that Utterson has to report to directly. Prior to the current case however, the two have been fairly close partners. A sharp marksman and a reasonably figure of the law, he rarely cuts corners for those who commit crimes.
- Abusive Parents: The scars on his hand are just the tip of the iceberg.
- Asexuality: He is also...
- Bi the Way: Biromantic. Just not very fond of anything sexual.
- Samus Is a Girl: Although he doesn't care for his gender identity anymore, Carew was born a girl, but took his twin brother's name after he fell ill, on the insistence of their parents. His original name was Emma.
His and Jekyll's families have been friends since they were children, so they frequently played together. He took over the family business in running the morgues that the Lanyon's own across London. Ironically, his deep fear of death and all things related means that he is only the figurehead of the company, and does next to no true work in the mortuary.
- Abusive Parents: On an emotional level, Randall had no voice in the matter of inheriting the family business.
- Affably Evil: His dark side, when he isn't just pretending.
- Asexuality: Lanyon is also aromantic.
- Big Bad Friend: Is associated with the Masked Society.
- Dirty Coward: What Hyde accuses him of being.
- Helpless Good Side: But only because he gave up on his own.
- Manipulative Bastard: His dark side used his pain and fear to let him get the control.
- Magnificent Bastard: At least as far as his alternate personality is concerned.
- Safety in Indifference: Why he let his dark side take over, Randall is deeply affected that Henry and him have grown appart over the years, and being "asleep" in his subconscious while his dark side run things is his way to cope with the pain.Randall: He gave me the option of to just disappear from it all- be in place with no responsibilities... No false promises. You wouldn't understand how peaceful that is.
- Smoking Is Cool: Especially when your dark side does it.
- The Social Darwinist: [[spoiler:His dark side believe that Henry's drug will help determine who is fit to live in the world he envisions.
- The Sociopath: Apparently, his evil side doesn't feel anything. It likely has something to do with the fact tha Lanyon is overridden by fear and is unable to break free of it. His evil side's coolness and absolute calm reflect his desire for a life where he wouldn't be always terrified of death.
- Split Personality Take Over: Randall seems to be getting along fairly well with Lanyon, to the point of willingly giving him control. At any rate, their situation is better than Jekyll and Hyde's.
- Walking Spoiler: He has a split personality just like Jekyll and is in league with the Masked Society.
Nicknamed the "Red Butterfly" at the Violet Seaside Bar, she is considered one of the most popular girls at the establishment. She has even been frequently visited by Hyde, who seems to have a deep interest in her. Aside from her occupation however, not much is known about her life. But like anyone else on the streets, she's willing to break laws and morals to stay alive.
- Genki Girl: She's very hyperactive.