Sonic the Hedgehog 3 has added Maria Robotnik to its character list, which implies the upcoming film will take a dark turn. The previous two live-action Sonic movies from Paramount have been predominantly light-hearted and comical, but that isn't always how things have gone in the comics, games, and TV series. Some of the storylines are downright tragic, especially when diving into Dr. Robotnik's family history. Though little is known about Sonic the Hedgehog 3, a teased new cast member hints that the upcoming film may start to touch on some of these darker topics.

https://screenrant.com/sonic-the-hedgehog-3-maria-robotnik-death-dark/