Kagoron

Kagoron is a Goron that appears in Spirit Tracks. He is the Mountain Goddess Messenger. He appears as a normal Goron, but is covered in ash due to the fact he is always on the mountain during prayer.

Once he notices that Link is a train engineer, Kagoron gives him a freight car to help him haul Mega Ice from the Anouki Village to put out the fires at Goron Village. Once Link has access to Dark Ore Mine, Kagoron will send him a letter that has a map leading to a treasure in the mine.

Trivia
His appearance is very similar to Gor Liggs.