Mark Jones, Jimmy Liu

Mark Jones — Mark Jones has been a Mattel designer for many years, with work for Hot Wheels and Matchbox (he was responsible for the Matchbox Real Working Rigs). He estimates having about 300 castings, most of them between 1986 and 2019, and was the inventor of the CM6 wheel. His projects include Pipe Jammer (1993), Hot Wheels 500 (1995), Porsche 911 GT3 Cup, Ferrari Enzo, Porsche 962, Mazda RX-3, Porsche 964, Ford GT 2017 and Ford Transit Supervan. The sources consulted do not state his education or year of entry.

Jimmy Liu — Jimmy Liu has been at Mattel since 2015 and is Director, Product Design for Hot Wheels and Matchbox. Before moving into design, he worked as a marketing manager at the company. His path to Mattel began outside the toy industry: he was a banker at Wells Fargo and other financial services companies and joined Mattel as an intern, later becoming a full-time employee. He also designs cars, but not regularly. In 2026, Lamley cited him as Design Director in the review of the mainline Toyota Prius.