Leon Kosciak, Bryan Zhao
Background
Leon Kosciak — Leon Kosciak is a Polish-American automotive designer who was an intern at Mattel from June to August 2025, on mainline models. Before that, he did internships at automotive design studios and worked as a graphic designer at other companies. He studied at the College for Creative Studies and ArtCenter.
Bryan Zhao — Bryan Zhao is a Hot Wheels designer (Mattel). He moved from China to the United States, where he became interested in cars. He is the designer of the 2026 mainline Toyota Prius, a project he himself proposed to the team; in a 2026 interview with Lamley, he explained that he advocates the use of part breaks (splitting a casting into separate parts) to reduce decals and increase detail. The sources consulted do not state his education or start date.
