Team Dad: It shows especially when Lagerfeld comes to kill Zephyr, how Vashyron feels about his companions; acting lightly at first, when Lagerfeld invokes a friendship between them thinking that will give him the boy, Vashyron snaps and blocks Lagerfeld from coming in.
Jerk with a Heart of Gold: Despite his sociopathic tendencies, Zephyr leapt without thinking to save Leanne at the risk of his own life, offers her his jacket when she looks cold, and risks his life to retrieve her cold medicine when she gets sick.
Anger Born of Worry: After she saves Zephyr from being killed by Lagerfeld, she slaps him upside the head and berates him for wanting to die... before breaking down in tears and pleading with him to at least "die with courage" while clinging to his back.
Driven to Suicide/Interrupted Suicide: The first time you see her in a cutscene, she's jumping to her doom, only to be saved by Zephyr. Later in the game, we discover that she did so because she believed she was about to die anyway and wanted to do so on her own terms.
Gameplay and Story Segregation: Both Vashyron and Zephyr mention repeatedly that Leanne is the New Meat and highly inexperienced compared to them. When she gets in an actual fight, however, she's just as skilled and capable as they are.
Kicking Ass in All Her Finery: Her default◊ outfit is a dress that looks a bit like a winter coat with knee-length boots complete with stilettos and a nice ribbon at her neck. And she kicks serious ass while wearing it.
Magic Skirt: Averted and played straight. Leanne's outer dress (or possibly coat) does ride up with all the flips she does, but there's another skirt underneath that that doesn't seem to budge. Outfit B averts this trope but some of the outfits in B have a pair of black leggings on her. The most expensive skirts don't.
New Meat: As noted above, she's considered the least experienced member of the team; and it's implied that she only recently (as in, a year after she moved in) started accompanying the other two on their missions.
Phlebotinum Rebel: She's the last of 20 children whose quartz stones were to be randomly broken one-by-one; one stone would be broken (and consequently one child would die) every year. By her 20th birthday, she decided to take matters into her own hands by jumping off a bridge... until Zephyr (and Zenith) intervened.
The Protagonist: She arguably gets the most Character Development, and the protagonists' conflict mostly revolves around her. Odd, since the dynamic within the trio doesn't really suggest this.
Sexy Santa Dress: Worn during the Christmas mission, and complained about endlessly.
Leanne: Aah, this skirt's too short! Zephyr: Now all we need is a trampoline. Leanne: What did you say? Zephyr: I said "the hem looks really keen."
Your Days Are Numbered: The reason for her attempted suicide at the game's beginning. Leanne was one of twenty newborns who Sullivan experimented on and programmed to die at a certain birthday; Leanne herself was supposed to die on her twentieth birthday, so she decided to kill herself, preferring to die on her own terms. However, Zephyr intervened, and when the clock struck midnight, she didn't die thanks to Zenith.
Your Makeup Is Running: Exploited; she says she wears makeup as a reminder to stay strong, because if she cries, she'll ruin the makeup.
"I'll set my doubts aside. I'll set them aside to build a world of order. For the sake of the people."
One Woman Army: A few years prior to the game, she invaded Basel with the goal of wiping its people out. She killed the entire Lucia excavation team, including Victor, and was about to kill Vashyron when Zenith intervened and broke her mind.
The Voiceless: At least in the present-day scenes. Sullivan treats her silence as an opportunity to speak freely and contemplate his actions. Though in the past, she spoke to Vashyron before knocking him out, calling him a "Knight of Zenith" as she realizes she can't kill him. She finally speaks at the ending, calling out to Sullivan as they meet outside Basel.
"Let me be perfectly clear this once: we're evil men who revel in our vainglory."
Pet the Dog: It's pretty obvious from the ending sequence that he genuinely cares about Rebecca.
Well-Intentioned Extremist: Arguably applies to him too as he is also following Freida's ideals albeit in a different way. While Rowen's goal is to control Zenith to prevent it from spontaneously killing people, Sullivan's goal is to free people from it entirely by making them like Rebecca. He eventually succeeds in making himself free but along the way Crank Seminary (among most of the plot) happens.
"I'm alive! You all saw it, each and every one of you! I've been chosen by God!"
Chekhov's Gun: In his first scene, he is given his quartz stone, which he fashions into a ring. Later, he punches out a monster threatening Leanne while wearing it, causing the ring to shatter. Pater dies.
Reasonable Authority Figure: Seems like a real nerd at first, completely and totally awkward. But one soon learns that he deeply cares for the common people and is devoted to clearing out areas so they can have places to live.
Stalker with a Crush: A harmless case; during several chapters, he's the first person you see hanging around outside the Base.
A close contact of Vashyron, Cardinal Theresa often gives missions to him and his team.
Reasonable Authority Figure: One of the few cardinals who isn't evil, completely insane, or both. She even donates food to the lower levels, and the soup made from the ingredients she sends is affectionately named after her.
Something about a Rose: Her first mission involves going to a dangerous place and placing a (fake) rose on a gravesite.
Widow Woman: Her husband has been dead for some time. It's implied that this is Victor, Vashyron's friend who died fighting Rebecca.