Dream Warriors did not have one effects shop. It had four working at once, loosely coordinated by mechanical effects coordinator Peter Chesney and makeup effects designer Kevin Yagher, each handed a different dream death to solve on its own schedule. Yagher’s shop designed and built the Freddy Snake that swallows Kristen — a credit that gets blurred online because both artists worked the same picture, but it belongs to Yagher, who has described sculpting it in detail. Chesney’s own house, Image Engineering, built the television set that erupts arms and pushes Freddy’s face through the screen, with Mark Shostrom fabricating the flexible dummy of actress Penelope Sudrow for the shot. Doug Beswick Productions built and puppeteered the stop-motion marionette rig for Philip’s death. George — credited under his birth name, Joji Tani — was hired as a freelance makeup artist working underneath that structure, alongside Greg Cannom and Matthew W. Mungle, not running a shop of his own.
The strongest inference places him inside the Philip sequence: Beswick’s crew built and animated the puppet that makes Philip walk like a marionette, while the makeup department supplied the sliced-open veins that become its strings. George is credited as a makeup artist on the film, but no source names him as the artist who applied this particular gag. His credit is for makeup, not design, and the sources do not put his name on the puppet mechanism itself.