Zubora and Gabora

Zubora and Gabora are characters from The Legend of Zelda: Majora's Mask. They are two blacksmiths who own a smithy in the Mountain Village on Snowhead. Zubora is a short, thin Terminan and Gabora is a large, hulking man whose race is unknown.

Biography
Since Snowhead is frozen due to the mischief of the Skull Kid and his mask, their forge is completely frozen as well. Link can melt the ice with Hot Spring Water or the Fire Arrow, or break the curse on Snowhead to make the winter end. They can then forge Link's Kokiri Sword into a Razor Sword, which again can be reforged into the Gilded Sword if Link provides them with Gold Dust.

This can only be done on the night of the First and Second Days due to the carnival being held on the morning after the Final Day.

Trivia
In The Legend of Zelda: The Wind Waker, the words "Zubora and Gabora" are written in Hylian on Phantom Ganon's Sword.