Ambriel

Ambriel was an angel who was sent by Heaven to make sure Amara was killed by the mass-smiting. She teamed up with Castiel to check the nearby Forest, but they got split up. When Amara awakened she consumed Ambriel, her grace, her memories, everything.

Personality
Ambriel had somewhat of an awkward personality. It was implied that this was one of her first times on Earth, as she didn't know what was strange about it being dark in the middle of the afternoon. She viewed herself as an expendable Angel, which lowered her self-importance. Her talking about this "expendability" of herself seems to have impacted Castiel, as she said that he shares this condition of being little important, but compared to the Winchester (she says that, despite he helps them, they are the true heros). This incisive opinion of her seems to have leaded Castiel to think more about his role in the hunters's work, and, possibly, influenced the angel in the decision of allowing Lucifer to possess him.

Appearances

 * Season 11
 * The Devil is in the Details