Elapid demons are massive, snake-headed creatures with thick, scaled bodies. Their bodies are jointed, insectile, and have a dozen skittering legs that end in jagged claws. Their heads are hooded and their neck flattens out like a cobra's. Yellow venom drips from their fangs, and their black-green ichor burns whatever it touches.


During a visit to Prague, a swarm of Elapids attacked Sebastian, Clary, and Jace—most, if not all, of which the trio managed to destroy.[1]