Mii Gunner Submission: Mike Anderson from Battle Clash
Aight, now this is a deep cut:
Mike is the main protagonist of Battle Clash, an SNES light gun game that makes use of none other than the Super Scope. Battle Clash is notable for being one of the few
original (that's right Yoshi's Safari go to your room) Nintendo IPs to have revolved entirely around the Super Scope: of the other two, Super Scope 6 is more of a collection of minigames to serve as demonstrations of the peripheral so it doesn't really have any characters (would make for a cool stage tho), and the other one is Tin Star, which could be forever erased from the Nintendo history books without losing anything of value. But Battle Clash has a proper world and characters, and it's not Tin Star! Adding onto that, assuming first-party submissions here can only be from series repped in Smash in some form, Battle Clash would be the only one to qualify: Mike's mecha, the ST Falcon, appears as a Spirit in Ultimate.
What's Mike's story? To cut a regular-length story short, he enters a sort of mecha fighting thing - the Battle Game as it's called - to defeat its current champion: Anubis, an evil alien dude who killed his dad. And Mike wants revenge.
So how would he work? Well, he'd get his own wig with the mullet and headband, and as for the actual costume, as a homage to the peripheral his game made use of, Mike's costume would be like the ones for Saki, Fox, etc. where he's made to look like he's holding a gun instead of having one for an arm: and in this case, the gun would be the Super Scope!
Why would I submit him? Cause I think it'd be a cool homage, and while I like him, he's probably too obscure to be a playable fighter.