Belphegor is fictional character from Reborn. He is a member of the Independent Vongola Assassination Group, Varia. Once a Prince at 8 years of age of an unnamed country, he stabbed his older Twin brother, Rasiel and was presumed dead. He is known as "Prince the Ripper" because of this event. This character is popular among cosplayers. It can be portrayed by wearing cosplay Belphegor costume and cosplay Belphegor wig. This character is always present in a Reborn cosplay.