Yes, Twinrova. A likely candidate for the fourth (or possibly fifth) Legend of Zelda spot. I still think that Young Link in the WW style has a greater chance than them. There are plenty of good reasons for them to be in, so let's get started...
1) Recurrancy in games: In terms of feasable playable characters, Twinrova pops up at #5, behind Link, Zelda, Ganondorf, and Tingle. Other ones that couldn't really be considered feasable included Epona, Malon, and Impa. Now note that this is in front of Vaati, Skull Kid (in terms of the character) and even Sheik.
2) Importance in the LoZ plot: Koume & Kotake are the surrogate mothers of Ganondorf, thus the sole reason for his existance. Had they not decided to raise a child, the Triforce may have remained hidden and nearly all of the conflicts that ever happened in any Zelda game would not have. The various Links would have just lived their normal everyday lives and Zelda would simply continue to fulfill her royal duties.
3) Potential for an amazing moveset: What other character harnesses two different elements? Let alone, two COMPLETELY OPPOSITE elements? This opens up tons of moveset opporitunities. Not to mention, their moves would look amazing in Brawl's graphics. They looked awesome on the N64, now just imagine them on the Wii!
4) Uniqueness in terms of a character: They would be one of only two "duo" characters, joining the Ice Climbers. Their Final Smash would be transforming into the giant single entity of Twinrova and completely pwning the stage with their pure awesomeness.
So, flame me, praise me, do whatever. >_> And believe me, I have just as many arguments against them as I do for them. So don't act as if I'm oblivious to their weaknesses.
Bask in the glory that is Twinrova
