Bianca di Angelo

"You must listen to me. Holding a grudge is dangerous for a child of Hades. It is our fatal flaw. You have to forgive. You have to promise me this."

- Bianca talking to Nico di Angelo

Bianca di Angelo is a Greek demigod, a daughter of Hades and the mortal Maria di Angelo. She is the older sister of Nico. She became a Hunter of Artemis in The Titan's Curse after being saved along with Percy Jackson, Grover Underwood, Thalia Grace, and her little brother Nico by the Hunters. She died and chose rebirth.

History
Not much is known about Bianca's past. She and Nico were born in Venice to Maria di Angelo and Hades before World War II, so Hades never broke the oath he took with his brothers after the war to never have any more half-blood children again.

Bianca and Nico both moved in Washington, D.C. at some point. When she and her brother were very little, their mother, Maria di Angelo, was killed when Zeus struck the hotel they were staying in with lightning, trying to kill Nico and Bianca. The Oracle of Delphi showed up shortly after the destruction of the hotel and was cursed by Hades to never have her soul rest: to stay in her body until it rots (and longer). He cursed her because she kept telling him that he should have given Bianca and Nico to Zeus, as she knew their future.

Shortly afterward, both were brought to the Lotus Hotel by the Fury, Alecto, who was disguised as a lawyer. Hades had to erase their memories in the River Lethe, so they wouldn't remember anything about their previous life.

After what felt like a month to them in the Lotus Hotel, which was actually about 70 years, they were taken out, once again, by Alecto. Hades brought them out because he wanted one of them to be the child in the prophecy.

The Titan's Curse
Bianca is a half-blood of unknown parentage (but it was realized after they figured out Nico's parent). After being rescued from Dr. Thorn by Percy Jackson, Annabeth Chase, Thalia Grace, and Artemis, Bianca makes the decision to become a Hunter. Bianca shows signs during the quest of being a child of Hades when she is able to slay some of the skeletal warriors easily when the others were unable to.

Bianca later joins the quest to apprentice under Zoë Nightshade. She stops to pick up a Mythomagic figurine of Hades, which, according to her, is the only statue that Nico doesn't possess. However, as the other quest members have warned, removing an item from the Junkyard of the Gods causes a malfunctioning Talos robot to attack them. Bianca goes inside the machine to stop it, but in the process crashes the robot into some power lines. Percy, Grover, Thalia, and Zoë search for her from when the incident ended until dawn, but they never find her. When Nico learns of her death, he blames Percy. He believes Percy had let her die despite promising not to let Bianca be harmed. Nico flees, and Percy discovers in the process that the di Angelos' are children of Hades.

The Battle of the Labyrinth
Percy finds out that Bianca is sending him Iris-messages so he could see what Nico and the ghost King Minos were up to.

Later, Bianca comes back as a ghost, through a ritual performed by Nico. She explains to Nico that her death wasn't Percy's fault and there was nothing he could have done to help, as she made the fatal decision herself. She also tells him he must forgive Percy, as holding grudges is the fatal flaw for children of Hades. This allows her brother to make amends with Percy, and ensure he is on the gods' side for the war.

The Last Olympian
Bianca appears to Nico when he tries to summon their mother's spirit. She warns Nico not to summon their mother; explaining that she is the one ghost he is not allowed to summon and that she has been hidden by Hades due to his grief over her death. Instead of summoning her, Nico sees a memory from his early childhood, where Maria was killed by Zeus in attempt to get to the children.

The Son of Neptune
Nico mentioned to his half-sister Hazel Levesque that Bianca chose to be reborn, presumably trying for three rebirths and three selections for Elysium, so that she could earn entry into the Isles of the Blest. Nico was saddened by this, as he was trying to sneak her out of the Underworld, and no one would have noticed because Death had been captured. Instead of sneaking Bianca out, he snuck out Hazel for her second chance at life.

The House of Hades
While in Italy with Hazel and Frank Zhang, Nico mentioned that he and Bianca came there once with their mother, Maria di Angelo.

Personality
Bianca is quiet and shy, and loves her brother, but dislikes caring for him all the time. Thus, she was relieved to be able to be her own person when she joined the Hunters of Artemis. She got along well with Percy, but he was angry with her when she joined the Hunters instead of coming to Camp Half-Blood, as this made him feel as if losing Annabeth had been for no reason at all and that she was also being selfish with Nico. He later forgives her, as she told him she joined the Hunters so she could live her own life and that she felt Camp Half Blood would be safe for Nico, for she believes that there are a lot of people like Percy there. Bianca and Nico both have a habit of gesturing with their hands while talking and when they are on edge.

Fatal flaw
Bianca di Angelo's fatal flaw may also (like her full-blooded brother Nico) be holding grudges. After her death, Bianca says that holding grudges is the demigod children of Hades' fatal flaw. In The Last Olympian, Nico tells his father that he (Hades), is holding a grudge that could end up killing the Olympians and the campers. It may also be a strong bond with those she loves (Nico). This may be because she was killed because she picked up a metal figurine of Hades, the only Mythomagic figure Nico didn't have, an act of misplaced sibling love.

Appearance
"I was amazed at how different she looked after just a few days with the Hunters. Her dark hair was braided, so you could actually see her face. She had a splash of freckles across her nose, and her dark eyes reminded me of someone famous, but I couldn't think who."

- Percy thinking about Bianca in The Titan's Curse.

Bianca has black eyes that are like her father's, which gleam with either madness or genius, and silky dark hair. She is lean and about average height. She has olive skin, and used to wear a floppy green hat that hid her face. She gains the silvery aura all Hunters have after she pledges herself to Artemis, and doesn't hide behind her cap anymore. She pulls her hair back into a braid like the other huntresses. Her skin glows silvery, because of her being a Hunter.

Abilities

 * ADHD: Like most demigods, Bianca possesses inborn supernatural battle reflexes and senses that she uses to analyze the fighting style of her opponent.
 * Dyslexia: Bianca's brain is "hard-wired" for divine Ancient Greek instead of modern languages.
 * Italian: in  The House of Hades, Nico shows that he can speak fluent Italian, so she could, most likely, as well.

As a Daughter of Hades

 * In The Titan's Curse, she is the only one who is able to kill the skeletons, when no one else could. It is highly likely that she was able to do this because of her father's power over the dead.
 * In The Battle of the Labyrinth, she (as a ghost) was shown to have dominion over the dead as they parted before her when Nico summoned her.
 * Presumably the other standard powers demonstrated by her brother.

As a Hunter of Artemis

 * Immortality, unless she dies in battle or falls in love.
 * Superhuman accuracy and hunting skills like running, jumping, stealth, etc.
 * She is naturally stronger and faster than a mortal, demigod, or nymph.
 * She usually has the upper hand in battle because of her fighting powers.
 * She can summon her bow and arrows whenever she needs them.
 * She has excellent aim with her bow and arrows.
 * She could talk to wild animals, mainly wolves.

Etymology
Bianca means "White" in Italian, referring to her father's albino like skin. Her surname "Di Angelo" means "From the angel". From this, her full name means "White from the angel" or simply "White angel."

Trivia

 * Bianca, Nico, and Thalia are the only Greek half-bloods of the Big Three whose aging has been tampered with by their godly parent.
 * Bianca is the only known demigod to die on their first quest.
 * She is the only child of the Big Three not to have an official portrait.
 * Bianca and her brother are the first two known demigods born outside North America, being Italian by birth.