Healing Factor: Coppelions recover from injury faster than anyone. Haruto has a particularly stronger one than the other Coppelion.
Living MacGuffin: Once the Coppelion project becomes known to governments all over the world.
Meaningful Name: Coppelion was named after the ballet Coppélia. Lampshaded by Aoi, who said just like Coppélia, a beautiful life size doll created by Dr. Coppelius, Coppelions were living dolls created by genetic engineering.
Member of the medical unit and a first year. Althrough she's not very confident on herself, she turns out to have great potential for psychic abilities such as flying, creating shockwaves and controlling matter - which was Dr. Coppelius' goal in creating the Coppelion.Those powers first manifest unconciously in stressing moments as she helps her friends with a blank expression. Ibara and Taeko never tell her about her powers, until Aoi gains a split personality named Izanami Jyugotenshi, named after an anime heroine. Izanami can use the full potential of Aoi's powers, but is also too violent and unhelpful, so Aoi later gets lessons from Mana on how to better use her abilities by herself.
Not only she gets depressed again after learning about her powers and situation, she also gets withdrawal symptoms from the drug that was used to keep Izanami active. However, this time she resolves to become stronger and help her friends.
Heroic Sacrifice: When the japanese government blackmails Ibara by requesting Aoi in exchange for a aircraft to properly take people out of Tokyo, Aoi tearfully complies. However, Ibara refuses to let her go.
How Do I Shot Web?: Has to learn from Mana how to use her powers without becoming Izanami.
Living MacGuffin: Regarded as the ultimate coppelion due to her power potential.
The Load: Since she (initially) has no obvious superpowers compared to the other Coppelion, Aoi is generally of little use to the group. Her awareness of this is the root of her self-esteem issues.
Magic Skirt: Very much in effect in Episode 9, given the positions of her legs during her depression.
Mood-Swinger: Suffers nervous breakdowns when things go south, but usually recovers with incredible speed once it's over.
New Powers as the Plot Demands: In Episode 10, Aoi showed that she was capable of flight. In Episode 11, she was suddenly capable of absorbing Kanon's electricity as well as forming an impenetrable energy shield. However, this trope can be attributed to nobody really knowing what the extent of her powers are.
Split Personality: Becomes the more agressive Izanami Jyugotenshi when using her true abilities. What's troubling is that despite wishing to protect Aoi, Izanami is far too destructive and doesn't want to continue dormant either.
Genre Savvy: Shoots electricity at Aoi to force her to awaken her powers and counter Mana, but it doesn't work.
Go Mad from the Revelation: When she was eavesdropping on Haruto and the Vice Principal's conversation, she heard that all the Coppelion were destined to die of a sudden death. She does not take it well.
Super Reflexes: Appears to have this at first when she dodges Ibara's shot. This was before the reveal that she had the ability to sense the bioelectrical energy put forth by living beings. It's still possible that it's an advantage in combat, just not against those who are faster and/or stronger than her, like her sister, or Ibara.
Defeat Equals Friendship: Her defeat actually meant being tortured for information and kept from reuniting with Meisa. Later, when she realizes that Aoi is having trouble controlling her powers, she escapes to aid her and Ibara's group.
Despair Event Horizon: When she accidentally killed everyone at Shinto Bank. Afterwards, Mana's company and Dr. Copelius' promise of fixing their bugs are the only things keeping her from just flopping on the floor.
Determinator: Does all she can to help Dr. Copelius so he can fix her radiation defect.
Fighting Your Friend: Fights and loses to Mana once she refuses to let Meisa keep opposing Ibara's group.
I Surrender, Suckers: Attempts to pull this trick on Mana upon losing to her but gets slapped in response.
Implacable Woman: She sometimes gets surprised and knocked out by vehicles and accidents, but Ibara and her team can't fight her directly and win at all.
Creepy Doll: Speaks through a tattered bunny doll with a sinister look.
Living Emotional Crutch: He's the only hope for the second-year coppelions to be cured from the "bug" that causes them to spread radiation, so depressed and desperate Meisa does anything she can to help him.