In the Dungeons & Dragons fantasy role-playing game, the sussurus is a type of creature.
The susurrus first appeared in White Dwarf #9 (October 1978). The sussurus appeared in the original first edition Fiend Folio (1981).
The sussurus appeared in second edition Advanced Dungeons & Dragons in the Monstrous Compendium Fiend Folio Appendix (1992).
The sussurus appeared in third edition in Monster Manual III (2004), where it is spelled "susurrus."
In the first edition of Fiend Folio, the sussurus was described as a large gorilla-sized creature which lives by filtrating air through tiny ducts and passages in its body. This causes a strange, droning sound known as the "dronesong". Undead creatures that happen to be nearby are rendered inert by the sound, and this effect is known as "The Sleep of the Dead". Sussuri may live over 1,000 years.
In third edition, the monster is made out of glass save for holes that perform the same function.