Kingdom Hearts: The Sonic Crossover

Blue Blur is a superhero action film based on the Sonic the Hedgehog video game series. It is a live-action, full-length theatrical film that tells an interesting version of the origin story of Sonic the Hedgehog.

Cast

 * Roger Craig Smith as Sonic- Sonic is originally a hedgehog from another universe known as Mobius. He was sent to Earth with the chaos emeralds to prevent the evil deity Chaos from escaping the emeralds. Sonic is able to temporarily shapeshift into a human form. He was adopted by the Kindal family and used the human name Greg Kindal. The public calls him "The Blue Blur". Joseph Gordon-Levitt and Charlie Hunnam are also considered for the role.
 * DJ Hazard as Julian Kintobor/Dr. Robotnik- Dr. Robotnik is a former robotics technician who is a master in android and mecha technology. He invades Station Square to try and find the chaos emeralds. Robotnik terrorizes the city, killing thousands with his airships and robots. This Robotnik is described as "not like the one in the games. This is a remorseless, relentless, morbid terrorist with a God complex". Robotnik expresses how he believes that he always has his "hand on the trigger". Bryan Cranston and J.K. Simmons are also considered for the role.
 * James McAvoy as Chris Kindal- Chris Kindal is Sonic's adopted brother. Chris is very protective over his brother, due to his brother not being a real human. His first name is a refrence to the character Chris Thorndyke from the anime Sonic X.
 * Stephen Lang as General Markinson- General Adam Markinson is the commander of G.U.N. He is against Sonic, believing Sonic only makes the situation worse. He is based off the Commander character from Shadow the Hedgehog.
 * Brett Dalton as Tim Drake- Tim Drake makes a cameo in the film. He saves Sonic from drowning during a G.U.N. mission. It is possible that Tim sometimes works for G.U.N.