Despite being described as very tough or impossible, he is not much stronger than any of the other watervine farmers in Joppa, having basically identical stats despite his considerably higher level. He has all Harvestry skills.
He has between 200 and 300 vinewafers available for trade, but never restocks.
A curious thing can happen at the start of some games, where he is hated by the Fellowship of Wardens, resulting in his immediate freezing death at the hands of Warden Ualraig.
Can teach you the Harvest skill for 75 Joppa Village Reputation.