Chongo still would've been my first choice, but absent that, Keanu Reeves is basically the best possible voice actor for Shadow the Hedgehog in Sonic Movie 3.

Pen name: Delila H. Smith (the H is silent). Thirtysomething trans lesbian, snugglemuffin, girlthing. Devil but in like a catgirl sort of way, perennial emotional wreck, too gay for this. Minors, please don't follow.
Chongo still would've been my first choice, but absent that, Keanu Reeves is basically the best possible voice actor for Shadow the Hedgehog in Sonic Movie 3.