i think Silver’s Tails character could be like Skye Prower from the Archie good future
Skye is shy(heh), polite, timid, skittish, clumsy and really cute. i think this is the perfect personality for a kid that looks up to Silver to have since Silver is very blunt, rowdy and direct. Silver bounces really well off introverted people(Blaze, Shadow, Whisper) so his sidekick being extra shy is a good foil to his straightforwardness and it’s something the kid characters in the games don’t really have yet(Tails and Kit are kinda shy but nowhere near Skye). it’s also perfect to bounce off Marine(since Silver’s little buddy would absolutely NEED to be pals with Blaze’s) and activate the paternal part of Silver we see sometimes(Silver is most powerful when he protects something after all)
Skye was not as good an inventor as Tails and flies backwards(he spins his body instead of his tails which makes him ricochet and get dizzy) which fits with how Silver doesn’t run as fast as other hedgehogs. they would have to have some kind of power like Silver to compensate though. one that could even work with Silver’s PK
it can’t be Skye himself for a lot of reasons but Silver’s Tails character could easily be a kid from the future that’s like everything i just talked about(also make them an arctic fox)
i think they could have an arc similar to Sonic/Tails and Blaze/Marine in Rush Adventure combined. like the start looking up to Silver because he saves them from bullies or something but kinda tests his patience when they go on an actual adventure before they really prove themselves like Marine did with Blaze in Sonic Rush Adventure