(The Mad One of Magic
/ Mad Archmage
A real Dungeons and Dragons
The True Neutral archmage of Greyhawk (or just the basic 3rd Edition setting), and is "the man" of that setting. In second edition, he was just a 20th level wizard, with a utility belt more complete than batman.
He plays off good and evil against each other to gain more power for himself. As any old wizard, he is irratible, impatient, and occasionally does not make a lot of sense. He is the leader of the Circle of Eight. Mordenkainen rides a cloud dragon.
yet? (No? You must be an Elminster
Well if you are an Elminster fan some facts to consider:
Mordenkainen has higher level spell slots, and can quicken them.
Elminster's Spell Resistance of 21 would be useless against Mordenkanien (level 27).
True Neutral Human 20th level mage
Missile THAC0 12
And of course carries more items than a dragon is likely to hoard
Any magical item
attached to Mordenkainen cannot be removed by any means.
is in battle, he cannot borrow a magical item from Mordenkainen.