Helorum was one of the three sons of King Benjamin, the Nephite king at Zarahemla, named alongside his brothers Mosiah and Helaman (Mosiah 1:2).
Benjamin had his sons taught in the language of his fathers, so that they might become men of understanding and know the prophecies spoken by their fathers and delivered by the hand of the Lord (Mosiah 1:2). He also taught them concerning the records engraved on the brass plates, telling them that without these plates, which held the records and the commandments, the people would have suffered in ignorance, not knowing the mysteries of God (Mosiah 1:3).
Apart from this account of his upbringing, the record gives no further detail about Helorum.