she would actually work really well

I actually think that she would work in Smash Bros.

Let's see... for her attacks, she would use a mic to hit her opponents with.

And for her final smash, she would sing a song into the mic (World is Mine or Tell Your World could work) to paralysis her opponents, giving her a opportunity to knock them off the stage.

nice, I think it'd be cool if her final smash would summon the other cryptonloids and they just kinda scream together

That could work too

(On the sing song bit, that could work if she was a Assist Trophy, just like Callie and Marie)

miku sings and all the others scream lol