The most commonly found wizards of the Disc are:

Munstrum Ridcully, The Dean, The Bursar, The Librarian, Ponder Stibbons, Rincewind & The Luggage.

Munstrum Ridcully

Mustrum Ridcully (aka Ridcully the Brown) is Archchancellor of Unseen University. Unlike past Archchancellors, Ridcully is pro-active in university affairs much to the disappointment of others. He's traditional war cry is "BURSAR!" much to the disappointment this time of the Bursar. Ridcully is much more active than the other wizards, liking to get out and about, go for a bit of a jog, and hunting animals. Let's just say he'd do pretty well as the Lord of any well to do estate anywhere. Final thought: Ridcully did a lot for rare species. For one thing, he kept them rare.

The Dean

Born to Rune! It is a common misconception that senior wizards enjoy a second childhood. It's just that, what with all the training and whatever, they rarely have time for their first until at least late middle age. Witness the Dean of Pentacles. Seventy going on seventeen, in pointy hat and black leather. Life one long round of clicks, music with rocks in and pyromania, punctuated only by the regular meals needed to develop the sort of mass normally associated with collapsed stars. Fellow faculty members maintain that although lacking in dignity, the Dean is redeemed by his great talent. A research programme has recently been initiated to determine what this may be.

The Bursar

Younger wizards work into the night on alternate realities. What they merely postulate, the Bursar's mind inhabits. Recently saved from Morpok's "Care in the Community" program (which is similar to that in England, but more humane) by virtue of having tenure at the UU, the fact that no-one else understands the University accounts anyway and ever increasing doses of Dried Frog pills.

The Librarian

Yes the Librarian is an orang-utan... but not always It happened many years ago in a freak magical accident. Many attempts have been made to return the Librarian to his former status but he seems quite happy to stay the way he is. As long as he gets his bananas, books are returned by the date due and no-one mentions the "M" word* he's quite happy to keep the library of Unseen University in good working order He has travelled occasionaly but in most cases incognito as "Pongo" pet of wizards.

*which ends in 'onkey'

Ponder Stibbons

Unique amongst the faculty of Unseen University, not so much for having been attacked by elves and a fifty foot woman, but for his willingness to come face to face with students. Credited with the architecture of "Hex", the first device to use a stored programme of spells (softlore), although the official records refer dismissively to this simply as the work "of the new man".

Rincewind

Rincewind is, by profession a coward. After that he's a wizard... barely. At one point Rincewind had one of the eight great spells of the Discworld lodged firmly in his head (from the Octavo) to be used only in the event that he couldn't get out of the position he was in. Rincewind is very good at what he does, which is running away from difficult situations. Some say that a foe of Rincewind's is Death who has on numerous occasions come to the side of Rincewind only to find that he isn't dead yet, most frustrating.

The Luggage

The Luggage is Rincewinds Travel accessory. It is made out of Sapient Pearwood, a magical wood that is normally used for wizards staff's. It was given to him by Twoflower after they split up The Light Fantastic. It has a bit of a homocidal tendancy towards eating people. It also clean presses your underwear and holds anything.

From Left to right: Senior Wrangler, The Dean, the Librarian, Munstrum Ridcully, (name unknown), Windle Poons, Ponder Stibbons, (name unkown). Second Picture: Rincewind and the Luggage.