The original Predator creature was bulkier, more insectoid, built by Boss Film Studios and worn on set by Jean-Claude Van Damme. It was scrapped mid-production, and Stan Winston Studio had a matter of weeks to reinvent the suit. George appears in the Winston crew during that redesign, though no source pins down when he joined or what he was assigned.
Matt Rose sculpted the bio-mask. Retrospective write-ups on the Winston redesign, none of them a first-hand crew record, attribute its surface paint to George, and a workshop photograph of unconfirmed origin appears to show him working on the helmet. Neither establishes the palette, material, or schedule, so the attribution stops there.