Miriam

Miriam was an angel that sought the Nephilim Jack for his power.

History
In Lost & Found, Miriam visited Pirate Pete's Jolly Treats in North Cove, Washington, demanding fries from the teenager working the counter. Though the clerk kept insisting that they didn't serve fries, Miriam kept demanding them. When hunter Sam Winchester entered, Miriam tried to get Sam to join in her demands for fries and the clerk told Sam that Miriam was drunk. Miriam claimed to be "a little bit" drunk and went outside where she spotted Dean with a bloody hand. Miriam went on a rant about how she once punched a poster and lit most of the stuff belonging to "her" roommate Becky who was the kind of person that always pissed people off. Miriam claimed that "I've got issues" as a reason for her actions. Miriam then watched the Winchesters drive off after having learned where Jack is.

Along with Lily and Conrad, Miriam accosted Clark outside of the local sheriff's station where Jack was located. Miriam took Clark hostage with an angel blade to his throat and had Clark call for help. Recognizing that Miriam is an angel, Dean stops Sheriff Christine Barker from shooting her, knowing that it will have no effect on Miriam. Dean demands that Miriam release Clark which she agrees to do if Christine kills Dean. Miriam states that Dean is not a hero, he's Becky, her supposed roommate. "You take things and break things and piss people off and just do whatever you want no matter who it hurts. Also, your a giant super-bitch." Miriam insists that Dean needs to die and orders Christine to do it.

As Christine hesitates, Miriam receives a message on "angel radio" that Lily and Conrad have Jack. Miriam declares that its "too late" and stabs Clark in the side with her angel blade. As Christine rushes to her son's aid, Dean attacks Miriam. The two fight with Miriam possessing the greater strength and throwing Dean around. However, Dean eventually defeats Miriam and holds Miriam's own angel blade to her throat, demanding to know why Miriam and her angels are at the police station. Miriam explains that they "want the golden ticket", Jack, due to his power to "do almost anything." Miriam taunts that Castiel is "all the way dead" because of Dean and breaks free of his hold with a headbutt.

Miriam enters the cell area where Sam has banished Lily and Conrad. Arming himself with an angel blade that Conrad dropped, Sam confronts Miriam and orders her not to go after Jack. Unthreatened, Miriam asks Sam what he will do if she doesn't and Dean enters, telling her to "guess." Surrounded on both sides by the Winchesters, Miriam holds her angel blade out to Sam in an apparent surrender before suddenly stabbing Jack through the heart with it, telling Sam that "if we can't have him, no one can." Sam quickly stabs Miriam through the heart with his angel blade, killing her.

When the Winchesters turn their attention to Jack, they find that Miriam's attack has left him unharmed. Clark survives his wound from Miriam and is rushed to the hospital by ambulance.

Powers and Abilities
Miriam appeared to be a regular angel with the abilities of one.
 * Angelic Possession - Like all other angels, she required a vessel to walk the Earth and their permission to do so.
 * Telepathy - She was able to communicate over "angel radio."
 * Immortality - As an angel, she would never age or die unless killed.
 * Invulnerability - As an angel, she is invulnerable to most forms of harm. However, she was briefly stunned by being smashed in the face with a fire extinguisher.
 * Super Strength - As an angel, she was stronger than humans, monsters and most demons. In a fight with the hunter Dean Winchester, Miriam was able to easily throw him around the room.

Weaknesses
As a regular angel, Miriam possessed all the weaknesses of one.
 * Angel Blades - She could be killed by an angel blade.

Killed By
After Miriam attempted to kill Jack, Sam stabbed Miriam through the heart with an angel blade, killing her.
 * Sam Winchester

Appearences

 * Season 13
 * Lost & Found

Trivia

 * Miriam is the first angel to ever be killed by Sam Winchester.
 * According to the Hebrew Bible or Old Testament, Miriam was the name of the sister of Moses and Aaron. She was a prophet.