Arranged Marriage - Triggered her trip into Paradise, and Kiriko spent much of the time afterwards figuring out how to get out of and avoid one for good.
Eleventh Hour Superpower - Kozue attains Mudo (Dark) offensive skills when she finally learns to love herself - around ten minutes before the game ends.
Ethical Slut - She shows shades of this, and will grow into it as time goes by.
Even the Girls Want Her - Or, at least, her butt, as evidenced by Renju and Suzume, at least.
My God, What Have I Done? - Drove most of her actions for five years. Only she didn't do it anyway, Misaki was lying.
Oblivious Guilt Slinging - A constant victim of it recently, when it's not her Hair-Trigger Temper tendancies filling in the blanks. Though knowing Misaki it may not be as oblivious as it seems.
Poisonous Friend - Which one is the poisonous one used to be pretty clear but is becoming debatable.
The Resenter - A naturally slow girl with no real talent and lacking the ability to speak in a school meant for the extremely gifted and the cream of society? This was inevitable.
Hollywood Homely - Due to a number of factors, this ended up coming into play.
Horrible Judge of Character - He dated Kazuya and was best friends with Kanaye. He had a crush on Reizo. He willingly hangs out with Noboru. You do the math.
Dojikko - Falls down the stairs, locks herself in a storage closet, runs into a desk, falls out of a tree, burns herself while roasting marshmallows, gets stuck in multiple vending machines, and shoots herself with a nail gun. She improves slightly as she starts to grow up.
Meganekko - Not an unusually brainy example, though.
New Super Power - Her combat role shifts every time her Persona does.
Neko Shogun: Fragile Speedster / Shock and Awe skillset. Unknowingly "inherited" from Shingo via Yoshimi's powers as The Empath, though the stats and skills are all hers.
The Mad Hatter - Aware people think he's crazy, but sees no issue about it with himself. Cracking jokes in between mood swings is likely to happen.
Mood Swinger - And yes, the mood swings. Mostly drifting between the extremes of a high-on-life happy state and an angered or irritated state when something doesn't go his way.
Messianic Archetype - The trimmings are all there (The Chosen One, surrounded by angels, dies for Iburi's sins, comes back to life, awakens the mundanes to their potential), but the The Unchosen Ones ultimately save the world without any help.
Warmup Boss - Was the first Persona-user thrown into Paradise, and would have been the first saved if Kei hadn't fallen to his giant robot dinosaur miniboss.
Demoted to Extra - He was originally slated to be the Star arcana Persona-user before Yoshimi was introduced. Now he just fills up a desk in one of the classrooms.