Biggoron is a giant Goron from the Legend of Zelda series. He is first seen as an excellent blacksmith. His younger brother is Medigoron, who is also a blacksmith but not quite as talented.
In The Legend of Zelda: Ocarina of Time, Biggoron lives near the top of Death Mountain. At the end of a trading quest, Link is rewarded a Goron Sword he created called "Biggoron's Sword". It is the same as Medigoron's "Giant's Knife" in that it is twice as strong as the Master Sword and requires two hands to wield it, but unlike the Giant's Knife, Biggoron's Sword never breaks.
In The Legend of Zelda: Majora's Mask, which takes place in an alternate universe, Biggoron is portrayed rather negatively as he is cursed by Skull Kid. He sits in front of Snowhead and blows power gusts of wind, which had killed Darmani. To get through, Link lulls him asleep by playing "Goron Lullaby".