The half-human/half-Auphe son of Sophia Leandros, Cal was bred by the Auphe for the purpose of ending the world. Nineteen when the series starts, Cal has spent four years of his life running from his heritage. Sarcastic, sullen, and prone to angsting, Cal alternates between taking nothing seriously, and sinking into full-on depression.
Unstoppable Rage: An angry Cal is a scary Cal. Niko comments that Cal has the sin of wrath all to himself.
Cal's hyperprotective older brother, Niko has spent most of his life looking out for Cal. Smart, highly educated, and probably the single most dangerous fighter in the series, Niko possesses a zen-like attitude towards life which he will drop at a moment's notice if it means protecting Cal.
Badass: Easily the single most badass character in the series. Niko terrifies humans and monsters alike.
Badass Bookworm: Far smarter and more educated then Cal, Niko is a voracious reader and works as a TA at a college.
Badass Longcoat: Niko's duster, which serves as a repository for all that is sharp in the world.
Badass Normal: Niko does everything that he does with no special abilities.
The Worf Effect: Once. Hob's manhandling of Niko shows that he is nobody to be trifled with.
A puck who works as a used car salesman, Robin is a several million year old being, who, desperate for companionship, has become one of the boys' few genuine friends. Enthusiastically pansexual, and the original party animal, he provides a lot of the comic relief in the series.
Crouching Pervert, Hidden Badass: Usually acts like a complete hedonist who's only interested in getting into other entities' pants, skirts, fur, scales, whatever. But piss him off, and he's absolutely deadly. To put it into perspective, he has no trouble beating Niko. As it turns out, in many of their past lives, Robin was the one who trained Niko (and tried to train Cal) in combat.
True Companions: With Niko, Robin and Cal, much as the latter two sometimes annoy her.
Introduced in Nightlife
The inspiration for the myths about elves, the Auphe are an entire race of psychotic thrill killers, sadists, and certifiable lunatics. Virtually indistinguishable from one another, the Auphe were the most feared of all monsters during the days before the rise of humanity, and still make most creatures who are aware of them twitchy.
Always Chaotic Evil: An entire species of mass murderers, torturers, and predators, the Auphe seem to have barbarism encoded in their genetics.
The last male banshee, Darkling is, in Cal's words, a nightmare for hire. Willing to do anything if the pay is right, Darkling is an integral part of the Auphe's plans for Cal and the world. Halfway through Nightlife he bodyjacks Cal as part of the Auphe plot to exterminate humanity.
Dragon-in-Chief: The Auphe may be in charge, but it is Darkling who secures Cal for them, Darkling who opens the gate to the past, Darkling who does his utmost to eliminate Niko, Robin, and Promise, and Darkling whose moves actually drive most of the plot.
You Have Failed Me: Offs one of the werewolves in his employ after they fail to kill Georgina.
A troll who lives under the Brooklyn Bridge, Abbagor knows a little bit about everything, making him a useful, if homicidal informant for Robin and the Leandros boys. He is as old as the Auphe and longs to fight them again.
A member of Cerberus' crew, Flay is Caleb's agent within the Kin, and acts as Cal's aide during his infiltration of Cerberus' organisation. Albino, and barely able to speak, Flay is nevertheless far smarter, and far more capable, then his own poor self-esteem lets him believe.
Evil Albino: Set up this way. He turns out to be a lot more sympathetic then you'd expect.
Hidden Depths: He's far smarter, and much less evil, then initial apperances would suggest.
I Have Your Wife: Informs Cal that Caleb has George. It turns out that Caleb is holding his son, Slay, as a hostage
Equal-Opportunity Evil: Having overcome Kin prejudices against difference, Cerberus offers employment to all the outcast in the wolf world, and is even willing to hire the likes of Cal, a human/Auphe cross.
"I'm the original reason there is no honour among thieves."
One of Robin's fellow pucks, and the oldest member of the species alive today, he operates a bar frequented by the Kin. He's the mastermind behind the events of the book. Utterly cold and without scruples, and void of all emotions but want, this particular Pan will gut you for a penny. He's the only puck Cal meets who instantly registers on his monster radar.
Time Abyss: Even moreso then Robin. Cal comments "You could see it in his eyes. You could see the age, and the cold-blooded apathy that comes with knowing that eventually, all things pass. All things, except you."
Flay's sister, and a member of the Kin in good standing, Delilah meets the brothers when they use her saliva to heal an injury that Cal had suffered at the hands of Sawney Beane. As she cannot have children, she and Cal eventually enter a sexual relationship. Ambitious and driven, Delilah plans to rise as high as she can in the Kin, despite her bad breeding.
Take a Third Option: Her Alpha forces her to choose between going against the pack and killing Cal. She kills her Alpha instead.
A serial killing Scottish Redcap with a penchant for butchering travellers, Sawney goes on a killing spree that leaves dozens of people dead after being resurrected in the present day, recruiting an army of revenants to spread his special brand of madness through New York.
Axe Crazy: The single most insane character in the setting. Not only is Sawney mad, but he is obsessed with madness, fixating on Cal because of his Auphe taste, and forcing his revenants to dress in straight jackets.
Promise's daughter by an unknown father, Cherish comes running to her mother for help when she gets in over her head with Oshossi. Beautiful, charismatic, and manipulative, Cherish is a thief, and a liar, yet claims to be trying to change for the better. She is not.
Pet the Dog: Ultimately recognises Niko and Cal as fellow victims of Cherish and parts with them on neutral terms. There's also his genuine concern for his pets.
Poor Communication Kills: A lot of violence could have been avoided if Niko and Oshossi had ever just sat down and compared notes. Instead each assumes that the other knows what he is talking about, and the mayhem just escalates from there.
A human/Auphe hybrid with dreams of repopulating the species, and making hybrids like himself, rather then humanity, the fastest breeding race on the planet. He currently has 1000 young at his disposal, and plans to breed many, many more. Having far better control over his Auphe abilities then Cal does, he enjoys toying with the other half-breed's emotions.
Retcon: His entire existence is this. Where was Grimm when the Auphe were looking for a male sperm donor? Or when they were out to use Cal to destroy the world?
Sidle messed up. Grimm managed to gate away from the hellhole he was in, but Sidle didn't know that's exactly what the Auphe wanted. He told them Grimm had died rather than admit he let one of his prisoners escape, and why would they care about that? They didn't use him or seek him out because they didn't know he existed.