From Halopedia, the Halo wiki
rjc is a company that produces several popular products of unknown type, which could be bought at the Oh2-Hnzu stores in Old Mombasa.
The letters "rjc" are implied to be the initials of David Candland's daughter Rylee, who was born about the time he designed the Oh2-Hnzu sign.
List of appearances
- Halo 2 (First appearance)