Manipulative Bastard: It's hinted that it may have somehow arranged the events that drive people to take on the "Grendel" mantle, in particular Stacy Palumbo's rape and the murder of Christine Spar's son.
The Ace: Hunter Rose, an Olympic-level fencer, best-selling novelist, millionaire socialite, master assassin and ruler of the largest criminal empire in North America. Only two other individuals are shown to be able to match him on an intellectual or physical level. One is Argent, an unaging, Super Strong werewolf, the other (via crossover) is Batman.
Bait the Dog: His stories are written out of chronological order - if you read them in order of writing Hunter becomes more unambiguously evil and less cool with each story.
Blade on a Stick: A "fork" with two knife blades, which can also be electrified. Most later Grendels use a variation.
Byronic Hero: Initially conceived as such, but his "hero" status is increasingly undercut.
The Dreaded: Terrifies absolutely everyone in New York.
Embarrassing First Name: Hunter Rose itself is a pseudonym - it's revealed at one point that his original first name was Eddie.
Gentleman Thief: A deconstruction of the character type. His personality and aesthetics follow it closely. However, rather than a likeable thief from people who can afford it, he's a ruthless and extremely violent gangster.
90% of Your Brain : Implied to be the source of Hunter Rose's exceptional physical and mental abilities- his autopsy suggests the he may have had "some advanced genetic mutation, resulting in much higher usage of our almost limitless mental capacities".
Sword Cane: Hunter Rose's "fork on a stick" can collapse into a cane for disguise purposes.
Teen Genius: Was a best-selling novelist and major underworld figure before he was out of his teens.
Villainous Breakdown: Has a mild one when he discovers that he may owe his abilities to a separate entity, and that he'll have successors, some of whom might even outmatch him. Also comes close to it in Batman/Grendel, when Batman beats him in one-to-one combat, and his actions nearly cause the death of a little girl.
Morality Pet: Deconstructed. Her relationship with Hunter means that she doesn't have a real childhood because of him using her as a social conversation piece, when she finds out he's Grendel she's so shocked she causes his death, and the whole of her life is blighted by her association with him.
Rape as Drama: Stacy Palumbo was raped by her husband (and psychiatrist) on their wedding night. He promptly committed suicide, while she remained catatonic for the rest of her life. This produced her one and only daughter, who would grow up to become Christina Spar and the new Grendel.
Wounded Gazelle Gambit: How she sets up the final battle between Hunter and Argent, by making Hunter think Argent has taken her hostage.
Ate His Gun: When the police come looking for him after Hunter's death.
Bullying a Dragon: His harassment of Christine and Brian contributes to both of their violent careers as Grendel and their deaths.
Electronic Eyes: One of his eyes has been replaced by an electronic lie detector with a metal surround.
Evil Is Not a Toy: When he starts writing stories about Hunter Rose, congratulates himself that he won't get drawn into the Grendel madness. His works end up cementing Grendel as a world-dominating meme, and he finally goes homicidally insane.
Even Evil Has Standards: Refuses to use nuclear weapons because of the devastation they caused in the past. This doesn't stop him from destroying the whole of Japan with the Sun-Gun, although he justifies it on the grounds that it doesn't cause lasting pollution and contamination the way nukes do.
God Emperor: Not entirely willingly, but if people will insist on worshipping him...
Good People Have Good Sex: Well, for elasticvalues of "good". Definitely the sanest and most rational, and possibly the most well-intentioned, Grendel, and it's strongly implied that this is down to his ability to maintain romantic relationships with other people.
Take Over the World: The major mystery of his character is if he was planning to do this all along, or if one thing just led to another.
Three-Way Sex: Has a long-term and stable relationship with Sherri and Fada. It's left decorously unclear whether the two women were actually sexually involved with each other, although all three of them certainly shared a bed.
Dirty Cop: By his era, C.O.P. continues to claim some kind of security purpose, but is basically just another armed gang.
Fat Bastard: By his final years, so fat he can barely move.
I Hate You, Vampire Dad: Goes after Innocent pretty much as soon as he regains a degree of self-awareness following his vampirisation.
Monster Progenitor: Whereas Tujiro was very restrained about who he turned, Cross turns people quite indiscriminately, so that in the later stages of the story practically all the vampires around are members of his bloodline.
Sanity Slippage: After becoming a vampire, gradually gets nuttier and nuttier.
Savage Wolf: Although he rarely transforms, his animal form is a wolf. This adds to the innuendo at times (especially in his fight with Eppy) that his life is somehow recapitulating Argent's.
Two-Faced: Half his skull is replaced by bionic armour.
Expy: Has some distinct similarities to Granny Goodness. It may be coincidental, but she also looks like an evil version of one of Gary Larson's trademark fat housewives with beehive hairdos and narrow spectacles.
The Apunkalypse: Mohican, dreadlocks, tattoos, ripped clothes and/or lots of leather... yep, she's definitely adopted this as her fashion sense.
Ascended Extra: Starts off as a random guard, then becomes the first-person narrator of Past Prime.
The Atoner: In Grendel: Past Prime. It was her clan that was on guard duty the night Jupiter Assante was assassinated; as a result, everyone except her commits ritual suicide, and she herself goes on a worldwide pilgrimage to locate the missing Grendel Prime.
Brawn Hilda: A rare Action Girl who's built like a bruiser rather than a catwalk model.
Kicked Upstairs: Her promotion to head of security for the Dakota residence turns out to be just a way of getting rid of Crystal's embarrassing ex-lover
Lima Syndrome: Falls in love with Crystal while acting as her main guard (in what was a Gilded Cage to such a degree that Susan may not have fully realised she was meant to be keeping Crystal prisoner rather than protecting her).
Love Hurts: Crystal drags her into a three-way relationship with Martel against her will, then dumps her for the kind of political arranged marriage that Susan originally rescued her from. Then Mace turns out to be an anti-Grendel fanatic and gets killed.
Morality Chain: By implication to Grendel Prime, given the serious moral decay he rapidly undergoes after her death.
Token Good Teammate: An essentially good and honourable person in a world where such virtues exist in an at-best twisted form.
Undying Loyalty: To Grendel Prime until she actually dies, at which point he morally declines fast.
You Gotta Have Blue Hair: Her dead white skin and green hair are both natural. In Past Prime, she states that all the Veraghens had been genetically modified for green hair and pale skin several generations previous, and comments that "one of my great-great-grandmothers must have liked the look."
Laurel Kennedy Assante
Bad Boss: Storms into the kitchen and throws boiling water over a sous-chef because she was served cauliflower.