The Fetish Shaman are monsters found in Act III of Diablo II in the Kehjistan Jungles. They are the higher-level equivalent of Fallen and Fallen Shaman. They are chosen from the most intelligent Fetish of a tribe. They aid their kin by having the ability to breathe fire and revive their slain kin.
Fetish Shaman are always borne upon the shoulders of a lesser Fetish. Undoubtedly, they believe that this appearance of added height makes them look more ferocious and is befitting their station. Their ability to resurrect their dead and breathe great gouts of flame ensures that none of their brethren will argue with their "lofty" requirements.
Kill the Fetish Shaman first because they can resurrect other Fetishes. Beware of their highly damaging InfernoFire attacks. Having resistance to Fire is useful. If you kill Shaman, the normal 'carrier' fetish will be released and attack you. He can no longer use fire spells or resurrect other Fetish. Note that if you kill Super Unique Shaman, the carrier will also be a Super Unique but with little health (and often with the same name). You get unique loot from both the killing the shamans and then from killing the carrier.
Fetish Shaman come in two other variants: Flayer Shaman and Soul Killer Shaman. Ratmen and Stygian Dolls don't have Shamans.