The flumph /flʌmf/ is a monster found in the fictional world of the Dungeons & Dragons fantasy roleplaying game. Flumphs are described as sentient, and are the only Lawful Good creatures in the original 1981 Fiend Folio. For the 3rd and 4th editions of D&D, license-holders Wizards of the Coast primarily used flumphs for comedic value.
The flumph was designed by Ian McDowall and Douglas Naismith, and was first introduced in the Fiend Folio (1981) monster sourcebook for D&D 1st Edition. In the humorous adventure Castle Greyhawk (1988), flumphs inhabit the plane of Silly and Unused Monsters, and appear in an encounter titled "The Room That Lets the Party Make It to the Next Set of Rooms".
The flumph was updated for D&D 2nd Edition rules in the Monstrous Compendium Annual Vol. 2 (1995). The flumph is further detailed in "The Ecology of the Flumph" in Dragon #246 (April 1998).
The flumph was officially featured in the 3.5 edition adventure "Box of Flumph" by Tim Hitchcock in Dungeon magazine #118 (January 2005). A 2006 April Fool's joke announced the release of miniatures for Modrons, flumphs, and similar creatures. Knowledge Arcana #9 (May 2007), an electronic magazine which drew largely on contributions from members of the Wizards of the Coast online community, features the articles "Lawful Great - One Flumph's Epic Journey to Herodom" which includes a stat block for a male celestial flumph, and in "Unglued! Top Secret New D&D Miniatures Set" there is a D&D miniatures version of Flumphy, the Huge Fiendish Dire Flumph of Legend.
As part of a 2009 April Fools joke, 4th Edition stats for the Flumph were included in the "Fool's Grove" Dungeon Delve article. The flumph appeared in fourth edition in the humorous adventure "Fools Grove" on the Wizards of the Coast website.
Wizards of the Coast discussed potential changes to the flumph for fifth edition in 2013. In May 2014, Wizards of the Coast confirmed the flumph would be included in the Monster Manual for fifth edition, released September 30, 2014.
Flumphs are depicted as similar in appearance to jellyfish. However they float in the air rather than water, and have eyes on stalks. Flumphs are helpless if flipped on to their "back".
The flumph appeared in the Tome of Horrors (2002) from Necromancer Games. Center Stage Miniatures created two flumph miniatures for the Tome of Horrors Complete.
The flumph is fully detailed in Paizo Publishing's book Misfit Monsters Redeemed (2010), on pages 34–39. The flumph also appeared in Pathfinder Roleplaying Game Bestiary 3 (2011), on page 118.
Flumphs have appeared in online comics, including 5 Minute Workday, d20Monkey, and in The Order of the Stick, where the flumphs are recurring characters. The flumph has featured in Something Awful, and on Dungeon Bastard.
Knowing what happens when a flumph is flipped on its back was cited as an example characteristic of a hardcore fantasy role-playing gamer by writer David M. Ewalt in his book Of Dice and Men.
CJ Miozzi included the flumph on The Escapist's list of "The Dumbest Dungeons & Dragons Monsters Ever (And How To Use Them)".