Tom Bombadil was Maiar (possibly) of the Old Forest; he was its guardian. Tom Bombadil was very powerful, and his power in the Old Forest was over all else. The One Ring itself had no affect on him in the Forest. He did not leave the forest, save for a few visits to the Barrow-downs and the Marish.
Bombadil called himself The Eldest and seemed to have been around since the beginning of the First Age. He had the appearance of a man, short, possibly fat, and red-faced. He had yellow boots and a blue hat.
By The Hildebrandt Brothers