The venerable and ancient master of Oi Dong, the home of the order of the Monks of History. Knowing almost as much about time as Wen himself, he now oversees the operations of the order, with the help of a humble sweeper.
The Abbot has not quite mastered the art of circular aging, and is forced to undergo serial reincarnation. This makes it awkward, as this sage old man spends half of his time saying things like "Wanna Bikkit." Despite all this, he is quite perceptive (as only babies can be). He has managed to work out many things about time (it involves a lot of quantum), and can usually predict when things will go wrong, than then dispatches Lu-Tze to patch them up before they do.
Another example of Pratchett's mastery of satire - a venerable infant...