"Our first priority with this new design is to finally put a stop to the erotic fan art. Any movie that may result is purely incidental."
So how did we get here? Well, the movie has been in development for a while, first at Sony, which wanted a "dark, edgy version" for "older audiences." Because who among us wouldn't want to see Sonic go on an obscenity-laced tirade while curb-stomping Dr. Robotnik? Perhaps because it was a terrible idea, Sony abandoned the project and Paramount scooped it up. Then in 2018, we got our first evidence that this movie was a real thing: a teaser poster featuring an uncomfortably muscular Sonic. The internet ridiculed this, but Paramount got defensive. They released another poster in which Sonic holds up a sign reading: "CAN'T A GUY WORK OUT?" And this time he has even more muscular legs.
Why did they take Sonic in this direction? It seems the filmmakers took inspiration from Ted. They wanted Sonic to be realistic and furry -- though keep in mind that Ted doesn't look like he's been shotgunning Creatine. The new Sonic was also to have naturalistic eyes, which the folks at Sega weren't "entirely happy" with. Fans weren't happy either. After the backlash, director Jeff Fowler randomly Tweeted that they were going to completely change the design of the character, which is kind of nuts. Now the movie has been delayed until 2020 to give the team time to either overhaul their movie or douse their offices in gasoline before escaping to South America under assumed names.