Nephilim

"The father has wings, the mother is a primate, and this child has a human soul mixed with angelic grace."

- Ishim to his flight of angels

A Nephilim is a hybrid creature that is made up of a human soul containing traces of angelic grace. Every known Nephilim was created from the union of an angel and a human. Castiel stated that creating a Nephilim is forbidden; however, Metatron revealed in "Clip Show" that there was one existing on Earth. Metatron viewed this Nephilim as an abomination due to her existence being outlawed.

Characteristics
As stated, Nephilim are typically the result of sexual reproduction between a human and an occupied angel vessel. The offspring inherits its soul from its human parent and receives grace from its angelic parent. This grace gives the Nephilim access to enochian magic which, fueled by the power of its human soul, is far superior to the power of angels. Nephilim have glowing eyes like an angel, although their glow is somewhat dim and grayish in color as opposed to the bright white or bluish-white glow of regular angels.

A Nephilim and its mother can also share certain special characteristics with that of its angelic father, such as burning bibles on physical contact. As was the case with Lucifer and Kelly the mother carrying his unborn child. It is also revealed by Dagon that carrying a Nephilim is always fatal to the human mother.

Theoretically, removing a Nephilim's grace will turn them into a normal human as removing the grace of an angel would turn them human.

History
The last time that there were Nephilim walking the earth God himself had to intervene in order to remove them from the planet.

In Clip Show, Metatron leads Castiel to the Nephilim Jane and tells him that killing a Nephilim and cutting out its heart is the first of three trials to close the Gates of Heaven. After a fight, Castiel kills Jane with an angel blade through the throat. In Sacrifice, it's revealed that a Nephilim's heart is actually part of a spell to expel all angels from Heaven.

In LOTUS, while possessing President of the United States Jefferson Rooney, Lucifer has sex with his lover Kelly Kline and conceives a Nephilim. The conception is felt by all angels as a surge of celestial energy, causing the angels to panic on "angel radio." After Lucifer is taken prisoner by Crowley, Kelly runs away from the Winchesters in order to protect her child. Dagon begins safeguarding Kelly a few months later. In The Future, the child resurrects his mother after she commits suicide and she becomes convinced that the child is good, not evil as everyone believes. The child chooses Castiel as his new guardian and aids the Seraphim in killing Dagon. Afterwards, Castiel becomes convinced the child needs to be born with his powers intact and tells Kelly that the child showed him "the future".

In Lily Sunder Has Some Regrets, a group of angels arrived on Earth in order to put an end to a Nephilim's existence. However the child was not a Nephilim and they were tricked by their leader. It was revealed that by the oldest laws of Heaven, producing a Nephilim was forbidden and its penalty was death.

Known Nephilims

 * Jane (deceased)
 * Lucifer and Kelly's unborn son

Powers and Abilities
The power level of a Nephilim depends on how strong their angelic parent is. Generally speaking, Nephilim are more powerful than Angels themselves. It has been stated that Nephilim, when they grow up, can grow into their powers which is very dangerous, with Castiel classifying them as "one of the most dangerous beings in all creation". However, he stated by a Nephilim parented by an archangel would possess unimaginable power beyond their comprehension. Indeed, Lucifer's son was able to use several powerful abilities even before he left his mother's womb.


 * Astral Perception - A Nephilim can perceive the true form of angels.
 * Super Strength - Their angelic ancestry endows Nephilim with enhanced strength sufficient to overpower and even toss common angels around. One was able to throw around a wounded seraph. Another was able to grant the same seraph the strength to easily overpower a Prince of Hell.
 * Healing - Lucifer's son is able to heal his mother's slit wrists and massive blood loss from the womb. He also healed Castiel's injuries in a matter of seconds while empowering him.
 * Resurrection - Lucifer's son is able to resurrect his mother at the same time he heals her.
 * Precognition - Lucifer's son had a premonition of Castiel's later confrontation with Dagon which he was able to share with his mother.
 * Power Granting - Lucifer's son was able to temporarily empower Castiel while his mother made physical contact with the Seraphim.
 * Power Negation - While empowered by Lucifer's son, Castiel rendered Dagon completely powerless.
 * Pyrokinesis - While empowered by Lucifer's son, Castiel was able to burn the Prince of Hell Dagon to ashes, a feat not previously seen accomplished by any other character.

Weaknesses

 * Angel Blade - Castiel killed one with an angel blade.
 * God - Last time Nephilim were walking the Earth, God had to intervene in order to remove them.
 * Grace Extraction (possibly) - Removing a Nephilim's angelic grace could possibly turn them human and render the Nephilim powerless.

Appearances

 * Season 8
 * Clip Show (first appearance)
 * Season 12
 * LOTUS (mentioned)
 * Lily Sunder Has Some Regrets (mentioned)
 * The British Invasion (mentioned)