Alec Tam, Eric Tscherne, Dave Martis

Alec Tam — Alec Paul Tam is a Chinese-American designer and former Hot Wheels designer. He joined Mattel in 2000 as a project designer for the brand and was the only second-generation Hot Wheels designer, following in the footsteps of his father, Paul Tam. He rose to Director of Vehicle Design (from 2007), in charge of the mainline, and later to Senior Director of Product Design at Wheels Brands (2012–2013). He redesigned the Whip Creamer, a car created by his father.

He later moved to Mattel's Boys Entertainment and Girls areas. He then worked as a design consultant for companies such as Moose Toys and YULU Toys and, according to the wiki, is now Director of Global Product Development at MerchSource.

Eric Tscherne — Eric C. Tscherne was a Hot Wheels designer from 1998 to 2004 and is a 2011 inductee of the Diecast Hall of Fame. He is remembered for bringing import 'tuner'-style cars to the line and for realistic originals such as Muscle Tone, 40 Somethin' and Switchback. He also created the Hot Tunerz line.

After Hot Wheels, he designed cars and toys for Jada Toys (Chub City, Dub City, Import Racer, Big Time Muscle), created the JL Full Throttle line, oversaw the redesign of the Johnny Lightning brand look and was senior director of design at Wicked Cool Toys (Paw Patrol vehicles, among others). Today he is an apparel designer at Ultra Cornhole and runs his own company, ET Design.

Dave Martis — David (Dave) Martis was a senior project designer at Mattel, working on Hot Wheels, from 1999 to 2004. Before that, he designed bicycles for GT Bicycles and automotive accessories for Powers Design International. After Mattel, he spent a year at Playmates and is now the owner of Devium Design.