In short: The user isn't looking for a standalone file. They are looking for a GameJolt game that contains the sonic.fbx file in its directory. You won't find official SEGA models on GameJolt. SEGA does not upload proprietary files there. Instead, you will find community-ripped or fan-made models.
You likely will not find a simple "Download" button on a single webpage. Instead, you will find a community of developers hiding gold inside their game files. Check the Sonic Utopia legacy build, dig through the Project Hero Discord, or simply head over to The Models Resource. sonic.fbx download gamejolt
At first glance, this search query seems contradictory. GameJolt is famous for hosting indie video games, not raw 3D asset files. So, what is really going on here? Why are thousands of developers, animators, and fangame creators searching for this specific phrase? In short: The user isn't looking for a standalone file
Did we miss a specific game that contains the file? Leave a comment on the source article (if republished) or check the GameJolt forums for the latest updates on sonic.fbx availability. SEGA does not upload proprietary files there
GameJolt has historically been the epicenter of the Sonic fangaming community. Games like Sonic Before the Sequel , Sonic After the Sequel , and Sonic Robo Blast 2 have millions of views.