JRush never released his Korra model, so I cant even use his boneset for this korra.
As for Mako, he'd go over Falcon, and Bolin will go over Ganon... Korra, im still not sure who.. im debating between Pit and Zelda.. 1 of my friends said fox and im just like.. what?
I don't know if this is what you meant but he released Korra in his SSB Hero's and villains pack.
Linky
http://www.mediafire.com/download/r48ur722c9t4ywk/SSB_-_Heroes_&_Villians_Beta.rarI could also put a download link in the your thread for just her if you don't want to download the whole pack. Um if your interested in the idea still that is.
Oh and love your choices for Mako and Bolin btw.