Dagon (Supernatural)

Dagon is the tertiary antagonist in season 12 of the horror series Supernatural. She is a powerful demon and one of the four Princes of Hell, one of the first demons created by Lucifer and a retired general of the armies of Hell.

She is portrayed by Ali Ahn.

Biography
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. It is implied by Lucifer that at some point in the past, she had somehow failed him.

Season 12
Ramiel tells the Winchesters that Dagon has taken an interest in Lucifer's sonshortly 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.

Castiel investigates the angels Dagon killed and finds video footage of it. Castiel recognizes Dagon and later calls the Winchesters to warn them about her. Castiel tells them all he knows of Dagon is stories and rumors about her psychotic savagery.

Dagon receives an unexpected message from Lucifer who wants to make sure she is protecting Kelly and the baby well. Dagon confirms that she is doing her best, to which Lucifer warns her not to disappoint him again. By morning, Dagon is ready to relocate Kelly to a new hideout, but Kelly refuses and wants her baby checked out because she is experiencing weird pain in her . Dagon reluctantly takes Kelly to a doctor who examines Kelly and initially says everything is fine. When Dr. Turner notices something off on the monitor, Dagon uses her powers to make him ignore it and reassure Kelly once more.

To cover their tracks and erase Kelly's, Dagon orders Dermott Culp to dispose of the doctor. Having previously ordered Dermott to burn down the warehouse she and Kelly were once at, hunter Eileen Leahy decided to follow Dermott and manages to kill him. While Dagon is out buying suppliments for Kelly recommended by Dr. Turner, Kelly is lured away by Eileen's friends, Sam and Dean Winchester. They try to take her back to their place but Dagon finds them. She teleports Kelly back to their hideout.

Dagon believes Kelly can't be trusted so she handcuffs her to the bedpost. When Kelly argues that she was simply worried about her baby, Dagon tells her that the baby is indeed fine, but Kelly herself is going to die because birthing a Nephilim is always fatal; it is why Kelly is suffering from small pains, which are bound to increase in intensity.

Dean leaves Castiel a voicemail about their inability to kill Dagon even while wielding the Colt. Sam also searches through the many books the Men of Letters have on demons for information on her, but tells Dean that the Men of Letters have very little on Dagon and the Princes of Hell and nothing useful to them.