In a recent interview with Youtube channel Shacknews, Sonic Team director Takashi Iizuka was asked about why Shadow the Hedgehog of all characters wasn't in Sonic Frontiers. Shadow is a popular character in the Sonic franchise who has been in the series since 2001's Sonic Adventure 2 videogame. Shadow was awarded a game with 2005's Shadow The Hedgehog on Gamecube, PS2, and Xbox. It was a fast-paced 3rd person shooter where Shadow had guns for some reason and said Damn a lot. It was the first Sonic game that was voiced by the 4Kids voice actors from Sonic X, as the game was going to be a lot more violent than originally intended, but changed when 4Kids cast took over and the game had recieved an E10+ rating. Despite this, it was actually still modreately fun and included a large amount of content, great action stages, an awesome soundtrack and lots of fun Hero vs Evil side missions. It was also a game that included the catchphrase 'Where's that DAMN fourth Chaos Emerald'.
Iizuka was asked if Shadow will join Sonic, Tails Knuckles & Amy on Sonic's upcoming 2D adventure, Sonic Superstars. Iizuka responded,