Saruman the White (also called Curunír in Elvish) is the head of the order of Wizards (Istari) and the lord of Isengard. Originally charged by the Valar with opposing Sauron, he turned to his own ambitions and was eventually overthrown by the Ents of Fangorn.
In MUME
Saruman is a major NPC quest-giver located within Isengard, accessible to players at level 21 and above. Say old to trigger his dialogue and receive quests.
He is trapped within the tower of Orthanc after the Ents' assault flooded the valley of Isengard, though he retains his considerable powers as a questmaster.