Hophni was the son of the high priest of Eli. Hophni and his brother Phinehas were two worthless men with no regard for the Lord, as we are told in. They gorged themselves on the meat that was brought to the altar for sacrifice and treated the offering of the Lord with contempt. The brothers also sinned with the women serving at the sanctuary. They didn't listen to their father Eli's rebuke and were eventually killed carrying the Ark of the Covenant in a battle against the Philistines. Eli died when he heard of the death of his two sons, and the Ark had been captured by the Philistines.
Hophni means "tadpole."