Sega: “Sonic 4: Episode I” – “Mad Gear” Trailer – 2010.10.01
Source/Fuente: Sega of America @ YouTube [https://www.youtube.com/user/SegaAmerica].
Sonic 4’s first Badnik / El primer Badnik de Sonic 4: MotoBug
Source/Fuente: Sonic 4 website update – now with 100% more Motobug! [https://blogs.sega.com/usa/2010/02/09/sonic-4-website-update-now-with-100-more-motobug/].
