Það er enginn einn gaur sem situr fyrir sem gordon hjá valve, heldur margir.
Eða eins og stendur í HL2: Raising the bar (á bls 145):
“Providing the face for Gordon was too big of a job for just one person. Valve designers took front and side photo reference of David Spreyer, Eric Kirchmer, Greg Coomer, and Kelly Baily and morphed them to create the texture for Gordon's head. Reference of Greg was used as a starting point for building Gordon's head model in XSI.”
Þar eru líka myndir af gaurunum og af modelinu af Gordon.