Both films feature recognizable characters from Sega's iconic games, including Eggman, Tails, Shadow, Knuckles, and more, making for a goofy, all-around family fun time.

Source: https://collider.com/highest-grossing-video-game-movie-adaptations/

But the loss is so severe here that Eggman literally snaps.

Source: https://screenrant.com/sonic-the-hedgehog-comics-idw-archie-darkest-moments/

Eggman might even be able to defeat Sonic if he didn't stop pursuing his most promising concepts.

Source: https://screenrant.com/sonic-eggman-pathetic-flaws-scrapnik-island-mind-control/

The DLC takes place before the final fight with Supreme, where Sonic enlists the help of Sage and Eggman to turn the Cyber Corruption into a new power source, potentially leading to a different final boss and ending.

Source: https://gamerant.com/sonic-frontiers-story-the-final-horizon-dlc-trailer/

The main antagonist of the series and Sonic’s arch nemesis, Dr Ivo Robotnik, more widely known as Dr Eggman, is an iconic video game villain.

Source: https://gamerant.com/sonic-games-with-best-playable-dr-eggman/