This fire-haired, Goron-consuming dragon has been intriguing me of late. With all the speculation of (let's just say) him flying around with an appearance of SS in mind, I'd love to see his backstory. Even if Link was not the Hero of the Gorons, he still could help out like he did in OoT. Now, suppose a great Goron warrior managed to escape Volvagia, who had his fill already, and he noticed the hard helm on his head. So this Goron proposed a hammer be made, with which they might avenge their losses. And of course Link happens to be there, inextricably getting involved with this Goron's mission. The fight with Volvagia would go off much like the RPG-style that Kafei's and Link's incursion to Sakon's hideout used. One would have a certain amount of time to complete something, lest Volvagia attack from above or below, and they'd switch off to implement the next strike.
This way, if it turns out Link was not the Hero of the Gorons (who I was told happens to be a Goron) then he could still be present during Volvagia's defeat. And if we was I imagine the battle went much the same way as it did with Ocarina of Time Link.