Dagon

Dagon is a Princess of Hell, one of the first demons created by Lucifer and a retired general of the armies of Hell.

Background
Dagon is the only female among the Princes of Hell, the first generation of demons after Lilith, created by Lucifer himself.

They acted as generals of Hell until Lucifer was imprisoned. Despite being the rightful heirs to Lucifer's throne, Dagon and her brothers Ramiel and Asmodeus opted to retire on earth with only Azazel assuming rule over Hell to continue their father's work.

Season 12
In Stuck in the Middle (With You), Ramiel tells the Winchesters that Dagon has taken an interest in Lucifer's child shortly before they kill him.

In Family Feud, Dagon appears as Kelly Kline is attacked by two angels and causes both angels to combust. Dagon takes Kelly to a warehouse where she tells Kelly that her child is a boy and sees him as the best hope for everyone. Dagon offers to protect Kelly and the two leave together. As they leave, Lucifer senses that Dagon is with Kelly and smiles and calls out Dagon's name.

Powers and Abilities
Dagon is a Princess of Hell and thus one of the most powerful demons to ever live.
 * Demonic Possession - Like all demons, Dagon requires a vessel to walk the Earth.
 * Immortality - As a Princess of Hell, Dagon is one of the first demons and thus several millennia old.
 * Invulnerability - As a demon, Dagon is invulnerable to most forms of harm. As a Princess of Hell, she is invulnerable to common demonic weaknesses such as the demon-killing knife and angel blades.
 * Molecular Combustion - Simply by touching an angel, Dagon was able to make them combust into dust.
 * Teleportation - Dagon was able to quickly teleport behind an angel to kill him after killing another angel just seconds before.

Weaknesses
Due to her status as a Princess of Hell, Dagon has very few weaknesses.
 * The Colt - It can kill Princes of Hell as seen with Azazel's death.
 * The First Blade - It can kill anything.
 * Death's Scythe - It can kill anything.
 * Lance of Michael - It is capable of killing a Prince of Hell as seen with Ramiel's death.

Lore
Supernatural' depictions of Dagon (both as demon and female) are contrary differred than in real lore.

Dagon (Hebrew: דגון‎‎, Tib. Dāḡôn) or Dagan (dda-gan 𒀭𒁕𒃶) is an ancient Mesopotamian Assyro-Babylonian and Levantine (Canaanite) deity. He appears to have been worshipped as a fertility god in Ebla, Assyria, Ugarit and among the Amorites. The Hebrew Bible mentions him as the national god of the Philistines with temples at Ashdod and elsewhere in Gaza. It always depicted him as a male deity with fish-man form.

A long-standing association with the word for "fish" dâg, perhaps going back to the Iron Age, has led to an interpretation as a "fish-god", and the association of "merman" motifs in Assyrian art (such as the "Dagon" relief found by Austen Henry Layard in the 1840s). The god's name was, however, more likely derived from a word for "grain", suggesting that he was in origin associated with fertility and agriculture. This image furthered an evolutionary belief that both men and fish had evolved together from the primal waters.

There are three places where Dagon is mentioned in the Bible. The first mention is Judges 16:23, where we are told that Dagon was the god of the Philistines. The Philistines offered “a great sacrifice” to Dagon, believing that their idol had delivered Samson into their hands. First Chronicles 10:10 mentions a temple of Dagon in which the head of King Saul was fastened. Then, in 1 Samuel 5, Dagon is brought to humiliation by the True God of the Israelites.

In 1 Samuel 5, The Philistines had captured the Ark of the Covenant, and they carried the ark into Dagon’s temple and set it beside Dagon. When the people of [the city of] Ashdod rose early the next day, there was Dagon, fallen on his face on the ground before the ark of the Lord. They took Dagon and put him back in his place. But the following morning when they rose, there was Dagon, fallen on his face on the ground before the ark of the Lord. His head and hands had been broken off and were lying on the threshold; only his body remained. That is why to this day neither the priests of Dagon nor any others who enter Dagon’s temple at Ashdod step on the threshold. The Lord’s hand was heavy on the people of Ashdod and its vicinity; he brought devastation on them and afflicted them with tumors. When the people of Ashdod saw what was happening, they said, ‘The ark of the god of Israel must not stay here with us, because his hand is heavy on us and on Dagon our god.

Dagon also figures into the story of Jonah, as well, although the deity is not mentioned by name in Jonah’s book. The Assyrians in Ninevah, to whom Jonah was sent as a missionary, worshiped Dagon and his female counterpart, the fish goddess Nanshe. Jonah, of course, did not go straight to Ninevah but had to be brought there via miraculous means. The transportation that God provided for Jonah (a great fish) would have been full of meaning for the Ninevites. When Jonah arrived in their city, he made quite a splash, so to speak. He was a man who had been inside a fish for three days and directly deposited by a fish on the shores of Assyria. The Ninevites, who worshiped a fish god, were duly impressed; they gave Jonah their attention and repented of their sin.

Appearances

 * Season 12
 * Stuck in the Middle (With You) (mentioned)
 * Family Feud