Keanu Reeves will voice the role of Shadow in Paramount Pictures’ Sonic the Hedgehog 3. Reeves joins an ensemble led by Ben Schwartz, who plays Sonic. In all three films, James Mardsen plays Sonic’s human ally, Sheriff Tom Wachowski, with Jim Carrey as the mad scientist Dr. Robotnik. While the plot of the third film is under wraps, the first Sonic watches as the anthrophomorphic hedgehog of the same name teams up with small-town sheriff Tom to evade capture by the government and Dr. Robotnik, who seeks to exploit Sonic’s powers. In the sequel, Sonic teams up with his friend Tails (Colleen O’Shaughnessey) to stop Knuckes (Idris Elba) and Robotnik from obtaining the Chaos Emeralds to further their villainous schemes.