MM

MM is an abbreviation for Minion Master (or minionmancer), a term referring to a Necromancer who can raise and maintain an army of bone minions and fiends. The popularity of this abbreviation has surged with the popularity of necromancers as questing and farming characters, particularly in Grenth's Footprint and Sorrow's Furnace.

Minion Master is also the title of a premade build.