People will no doubt call Sonic X Shadow Generations a “love letter” or “tribute” to Shadow the Hedgehog, Sonic’s brooding rival who debuted back in 2001’s Sonic Adventure 2.

Some Sonic characters, like Mephiles and Tails Doll, have eerie designs that can be terrifying to encounter. Dark Gaia, Metal Sonic, and Black Doom have ominous appearances and powers that make ...