Carlos has a leopard tattoo on left arm and a receding hairline.
Pfaff is blind. He needs daily doses of medication for severe heart problems, and left his medication behind when he disappeared.
Pfaff was last seen on March 6, 1998 in Richland, South Carolina near his home in the Alpine Forest Mobile Home Park, riding in a dark blue 1987 Chevrolet Astro minivan with South Carolina license tags numbered CAR 564. His television, radio, and video cassette recorder (VCR) were found to be missing from his trailer when police searched it after his disappearance. Foul play is suspected, and his case remains unsolved.