The Adventures of Buckaroo Banzai Across the 8th Dimension

The character "John Small Berries" is portrayed by 2 actors but neither of them are listed in the cast or crew. Can someone find out who these 2 guys are? One is shown as a file photo on a computer employee directory with basic personal information and a different actor portrays John small Berries as a security guard at the front gate to the Yoyodyne Propulsion Systems facility.