Mulch Diggums is a fictional kleptomaniac dwarf from the Artemis Fowl series by Irish fiction author Eoin Colfer. He has been arrested numerous times by the LEP due to his criminal nature; stealing from humans and fairies is his speciality. An expert burglar, he is also infamous for his powerful and deadly flatulence, varieties including, the "torpedo", and the "cyclone". As a dwarf, he can tunnel underground using his unhinged jaws at high speeds. He even has his own tools to work in his favor. His beard hair act as antennae and he can pick up vibrations through walls and underground. Also, when they are pulled, they stiffen and form to work as keys and other useful items. When his spit dries it becomes rock solid and glows in the dark. It also contains a sedative. His dwarf rock polish is used to melt glass and metal. A side effect of his flatulence is the buildup of Methanobrevibacter smithii archaea, which prevents aeroembolism. (In reality, the methanobrevibacter smithii is an archaeon found in human guts which helps decompose refined sugars.) A running joke in the series is that he smells horrible. Aliases Mulch Diggums has used various aliases in the Artemis Fowl series, including Lance Digger, Mo Digence, The Grouch, Tombstone and likely various others in his three hundred year "career" as a thief. Role in the series Artemis Fowl In the first book, Artemis Fowl, he is bribed by the Lower Elements Police (LEP) to assist in the siege of Fowl Manor. He is able to infiltrate the manor by burrowing under the wine cellar and gives Domovoi Butler, Artemis' accomplice, quite a surprise with his waste ejection. He finds out that Artemis's secret weapon is a copy of the Book of the People. He fakes his death in a cave-in as a bid for freedom, and steals bars of gold from the Lower Elements Police Holly Short (the elf captured by Artemis Fowl) ransom fund before tunnelling away. The Seventh Dwarf Mulch was lured by Artemis Fowl to steal the priceless Fei Fei tiara which contains an enormous blue diamond. However, a group of six dwarves led by Sergei the Significant have already stolen the tiara and plan to sell it at a circus to several European jewellery fences. As the dwarves perform in the circus, Mulch sneaks in underground and takes the tiara, also knocking out their