thinking of like a sonic underground au
But with like shadow and the rest of the crew being recurring characters
Shadow reluctantly working with robotnik because he was promised the safety of someone he knew (thinking about maybe having it be like cream in the sense shadow wants to protect her and the sibling relationship they have because she reminds him of someone he lost) but then after wedding bell blues when queen aleena returns he deflects
or because he used to work in the palace before the prophecy and is just acting like he wants to be on robotnik’s side but knows the triplets will return to the throne
tails is like the band manager (also helps with setting up stages)
rouge and knuckles are where the crew get their concert gear (knuckles gives them amps and all that stuff /rouge is their stylist)
Blaze was a royal guard and guides the triplets when they need her (she’s in hiding as well but comes out often to help)
Team chaotix being like a rival band or something (vector on vocals, espio on base/vocals and charmy gets the keyboard)
amy is like a groupie, one of the bands biggest fans
not entirely sure about the rest yet