|Eye Color||Hazel brown|
|Affiliations||A being named it|
-Siren taunting Irina - The High school Of Monster Arc Pt.1 Edit
Siren is a very pale skin demon, his hair color is blond and his eye color is hazel brown, he wears baggy shorts, brown sandals and a black sleeveless black shirt.
He first appears in chapter one stalking Issei and his parents. He lures Issei down a alleyway with a cat meowing, which put Issei in a trance like state. He activated his nexus and dragged the family in.
He appeared in front of the family, and quickly dispatched the parents. He stabbed a hole