In Toy Story, he states that he was manufactured by a smaller company that was purchased in a leveraged buyout by Mattel (coincidentally, real-life Rex toys used to be made by Hasbro, but as of 2009 are indeed made by Mattel).
I Toy Story, fortæller han, at han blev lavet af et datterselskab til Mattel (tilfældigvis, real-life Rex brugt legetøj, der plejer at blive lavet af Hasbro, men er fra 2009 faktisk lavet af Mattel).