Haru Okumura

Haru was sitting in the school garden and planting flowers.

After her real desires are brought to light, however (namely, to get out of her arranged marriage with her abusive fiance), she changes her mind and decides to team up with the Thieves to change her father's heart. Despite this, she is initially still reluctant to oppose her father, and as a result hasn't fully awakened to her Persona, though this changes once she learns that her father has no illusions of the kind of man her fiance is, and declares that she is no longer his "subservient puppet."
Afterwards, she decides on the codename "Noir" (the French word for "black"), to remind herself that she is operating on the darker side of the law despite her desire to be a heroine of justice. As such, she is rather surprised to discover that the others decided on their codenames based merely on how their outfits look, when she had created such an elaborate backstory for hers.
Initially, Haru behaves very formally towards the group, believing that it's her responsibility as the newest member of the team. After being told that whether or not she's new doesn't matter to them, however, she loosens up and becomes much more casual. She calls Makoto "Mako-chan," after declaring that she is the first friend of her own age she's ever had (initially catching Makoto off-guard, but soon considers it refreshing), and calls Morgana "Mona-chan," both in and out of the Metaverse. She also uses affectionate honorifics for everyone (-kun for boys and -chan for girls). This attitude goes both ways, as she dislikes the younger members of the group calling her "Senpai" and asks for them to just call her "Haru."
In her spare time, she enjoys tending to her own garden, as well as growing vegetables on the roof of the school. Besides gardening, she also enjoys horror movies.