Angsty Surviving Twin - Has a grudge against the gods after his brother was murdered by a corrupt one. They Never Found the Body. The underworld chooses those on the brink of death. Take a guess what happened.
Broken Bird - During the siege of her home city, she ended up losing her combat unit, her lover, and became what most (including herself) consider a demon. She tends to be unsure of herself because of it.
Weak, but Skilled - Sickly and weak enough to need a bodyguard, but there is a reason why the bastard is employed by the Guild as a sorcerer.
AFGNCAAP - Averted, as she has an age, a gender, and a culture (around 50 years old (though you don't find out how old she looks), female, and from the Hawai'ian analogy of the setting). You don't get a description of her face.
Kill It with Water - Her preferred martial art style when she is serious is Water Dragon Style.
Leilani was talking to someone invisible, Woe turns up.
Woe: Who are you talking to?
Leilani: Oh, the narrative.
Really Gets Around - Thief. Bevel. Bryony. Peace. Oh, and she serves Venus, the Maiden of Serenity. And the author would like to remind the readers that the story was inspired by bad writing in H-games. So porn happened.
True Companions - By the epilogue, Leilani ends up with this. She tends to help behind the scenes, but in canon, she ends up helping her friends take back Bryony's home city from the Underworld.
Dishing Out Dirt - Her elemental aspect is earth, in the form of sand. She hates it enough that she is training in Earth Dragon Style to make it look more like stone. In the Canon epilogue, she changes her motivation to becoming a Jade Aspect, an element of the Underworld.
Puppy-Dog Eyes - It just looks a bit weird when the ones doing them look exactly like a badger's.
Shout-Out - Her birth name is Cynis Firefly, and her current name comes from one of the author's friends suggesting that since there was Summer River, the author needed to have someone with the other option of the actress and character's names.
Anti-Villain - He is a servant of the Underworld who wants to bring down the world into nothingness. He has no regrets about it. Yet the first meeting with Leilani, he gives her the directions to where she needs to go, and gives her a map, and in another scene is trying to take care of a little boy who doesn't realize he is dead yet.
Eat the Evidence - Spoilered because Leilani wasn't aware that was what happened, though Word of God confirmed it. He ended up stopping an godblooded assassin from attacking Leilani... And then ate the body.
Evil Albino - A subversion, though he is actually an albino. He isn't a monster, though he is a villain of sorts. Word of God also states he dyes his hair black as a habit from before becoming a deathknight, and takes a lot of care to not be out in the sun uncovered because of his condition. He is also nicer than his brother.
Funetik Aksent - In Riverspeak, he sounds vaguely German. He drops the accent in Old Realm.
Necessarily Evil - Tying in with below, he honestly thinks he has to do what he does to keep what happened to him from happening to others.
Rage Against the Heavens - Full title: The Redhanded Thief Stealing the Celestial Flame, and has a liking for godflesh. Reason being he was almost killed by a corrupt god, only saved by becoming a deathknight.
Red Oni, Blue Oni - Thief is the red one to Bevel's blue. They even dress in the right colors! (And well, there's the fact that Thief is the REDhanded Thief...
That Man Is Dead - Deathknights sell their name to the Underworld on becoming a deathknight. He actually denies his name when his brother addresses him as it.
Too Kinky to Torture - His preferred martial arts style involves taking pain, and dishing it right back out. It has had... some effects on his sexual preferences.