Sonic the Hedgehog 3 didn’t include one important character from Shadow’s backstory, Emerl, but the next movie should take the opportunity to introduce him to the film franchise. Emerl is a 4,000-year-old robot responsible for destroying an ancient people known as the Fourth Great Civilization. He was discovered by Gerald, who took him aboard Space Colony ARK in hopes of reprogramming him for good. Despite his connection to Shadow’s past, Emerl never appeared as a character in Sonic the Hedgehog 3.
Emerl’s backstory could be expanded upon in the next movie, possibly featuring him alongside Metal Sonic and Amy Rose. His robotic appearance means he could team up with Metal Sonic, offering a reason for Shadow to return should the duo have some past connection that hasn’t been explored yet. Despite not appearing in Sonic the Hedgehog 3, Emerl could have an important role in the next movie, especially because of how important a role he plays in Shadow’s game backstory.
The robot would be the perfect excuse to bring the Ultimate Lifeform back in the next installment, giving him an important role that continues to expand upon his storyline. Although there’s no confirmation if the ancient robot will show up, his importance makes it seem inevitable he will. Sonic the Hedgehog 4 speeds into theaters on March 19, 2027.