Crowley, the king of hell is a sarcastic demon. As dangerous demon Crowley is, he tends to enjoy torturing his enemies like Sam and Dean Winchesters, demons, angels and other supernatural beings with sarcasm. He likes to make funny jokes to fool his opponents and even at times he's a charming demon."
Crowley is defiantly on dangerous demon from hell. He is the King of Hell and maybe one of the dangerous demons on Supernatural. He also slaughter many supernatural creatures such as vampires, shapeshifters and even demons. He is cunning, manipulative and kills his own kind as well. The demon cannot be killed as he is known to be immortal if a "
Crowley is the badass demon who is the king of hell. He has a knack of making the Winchesters lives miserable. A dangerous and sarcastic demon who at times is charming and has no remorse of anyone's death. That's makes him one of the hated characters which we love."