He is Envinyatar(the Renewer) , Maia of Estë.

A merry fellow with eyes full of glee, his content smile never turned upside down. Sometimes it seemed he knew what is to come, but he always laughed and denied this power.
In fact, not much is known about the extent of his powers. He had healing powers surpassing even that of the elves. Creating medicine to treat any illness and heal any wounds.

He likes gardens, trees, and old Forests; He smokes a pipe and likes good plain food. He is fond of mushrooms; has a very simple sense of humour; he goes to bed late and gets up late. He doesn’t travel much but when he does it's always to visit friends, and yet he’s always where he needs to be. He enjoys playing the banjo with his best friend Tom Bombidle as he sings. He visits him often and it's believed that he is the only one that knows Toms true nature. He was always barefoot, with food to share for anyone that was hungry, either in his home or in his bag.
He was a teacher above all else, helping the children of Ilúvatar to live a content and happy life free of greed and lost for power. His teachings had the most impact on the hobbits Teaching them a simplistic view of life. This can be seen in their constant desire to not just eat but have a set schedule of eating times. So we have a race that is uncorrupted and basically good, making them great ring bearers.
He seems to always appear when you need him the most, laying on a hammock nearby smoking a pipe.