Set after the events of Shadow The Hedgehog(05).
Shadow wanders the world, having defeated the Black Arms and regained his lost memories. He decides to live for himself now, leaving his past behind him, though he still keeps Maria in his thoughts.
Follows the continuity of IDW Sonic the Hedgehog (2018).
set during the events of Sonic Adventure 2.
Shadow, freshly awakened, is out for revenge for Maria's death. Has a bone to pick with literally everyone, especially G.U.N and humanity in general. Is cordial with Dr. Eggman and Rouge the Bat, but that's about it. trusts no one.
set during the events of Sonic the Hedgehog 3.
Awakened after 50 years, Shadow is full of bitter anger and hatred at the people who took his sister away from him. He works with Gerald Robotnik to get his revenge on humanity for Maria's death.