"DOOM, not to be confused with nobody"

Eric Thurm on heteronymity in Kierkegaard and MF DOOM is a great read:

Each of Doom’s characters is also a way of showing off the full range of his musical talent — the Metal Face, Viktor Vaughn, and King Geedorah characters all have distinct syntaxes, flows, and levels of vulgarity, and are tied to different elements of hip-hop. The Metal Face name appears on albums that Doom has both produced and written himself — the closest thing to a pure expression of himself — while King Geedorah is primarily a behind the scenes producer, executing a “script” over the course of Take Me To Your Leader in accordance with the “voice-throw trick” the character uses to control Doom, and Viktor Vaughn raps and promotes himself (including on a series of tracks representing an open mic night), but leaves the beat making to outside producers woven into the narrative as his friends.