Sandalphon

Sandalphon is a Pure Angel created by the Abrahamic God and the sub-leader of the Elder Seraphim. He is the Seraph of Trust, Bonds, and Connections, and serves as the gatherer of prayers of the followers of God. He is also the guardian of prophets, alongside his twin brother Metatron.

Summary
Sandalphon is an archangel or seraphim that is prominently featured in Jewish mysticism, such as the Kabbalah where he resides in the Sephirot of Malkuth alongside his "twin brother" Metatron. Sandalphon is described as the "dark angel" as opposed to his twin brother Metatron whom is regarded as the bright angel.

Sandalphon is regarded as the master of heavenly songs and it is said that a human would take 500 years to walk the length of his body alone clearly showing his celestial size.

Sandalphon is said to be responsible for determining the gender of a person in one's embryonic state, and in other accounts said to be a guardian angel who delivers prayers to God. Though not explicitly referenced in scripture, some of the earliest sources on Sandalphon refer to him as the prophet Elijah transfigured and risen to angelic status.

Appearance
Sandalphon appears as a tall and handsome man, with white hair that's often spiked up and light-blue eyes which are usually hidden away by either a black blindfold or a pair of dark sunglasses. He also has a stylized image of the Tree of Knowledge of Good and Evil tattooed on his back.

Like all Seraphim, in his human form, he has a gold halo on top of his head and twelve white-feathered wings, each with the wingspan of around 12-feet in length.

He usually wears an all-black high-necked jacket with matching pants and dark dress boots. According to Issei, he dressed more like someone who's about to go on the catwalk than the usually depiction of an angel.

When acting as one of the Elder Seraphim, he wears a dark-blue suit with silver-and-gold embroidered designs, an off-shoulder cape over his left shoulder made out of golden feathers, and silver dress shoes. He also wears an intricate circlet formed of gleaming stars and constellations.

In his true form, Sandalphon appears as a giant being made out of primordial light, with the upper half of his body relatively humanoid while the bottom half resembles a dragon's body. He has countless claw-like hands growing all from the sides of his body, each holding a different weapon both recognizable from history and mythology, as well as entirely unknown. He has a total of 27 wings in this form, all gleaming and metallic in color with the feathers' tipes darkened into a midnight-blue color. He also has a giant silver halo behind his head in the shape of the crescent moon, which makes him looked like he's having horns from afar.

Personality
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History
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Powers & Abilities
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Equipment
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Weaknesses
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Quotes
"I am Sandalphon. As the bearer of my mask, your prayers grant me strength. Come, let us fight together."

- Sandalphon to his summoner Helias Kawakami

Trivia

 * Sandalphon's appearance is based on Satoru Gojo from Jujutsu Kaisen.