This unnamed demon is one of few to survive Crowley's wrath.
Season 10
This demon was bound to a pillar and used as a target for darts by Crowley. He groaned in pain every time a dart hit his chest. He appeared human due to his ordinary clothes.
After Crowley addressed the two demons who came to speak to him, he stabbed another dart into the demon's chest, and he screamed in pain. Crowley ordered him to "shut up", and as he calmed, he noted that the darts on his chest were "a nice grouping".
Season 11
Dressed in a black suit, this demon joined other demons at Crowley's gathering. As Crowley made a speech about making Hell "great again", this demon was unable to contain his laughter. When asked what was funny, the Demon Minion answered that Crowley was making empty promises again, just as they predicted.
This demon added, along with the demon minion, that Crowley had been the bitch of Rowena, the Winchesters, Amara, and Lucifer, in succession.
Having spoken about their feelings, the demons got up and left the room. It is unknown if this demon participated in the attack against Amara.