Lower Elements significant person Foaly
Artemis Fowl and the Arctic Incident
Artemis Fowl and the Arctic Incident is the second book of the series. It follows the rescue of Artemis's father Artemis Fowl I from the Russian Mafia, alongside the battle against the B'wa Kell goblin gang who have allied themselves with the maniacal genius pixie Opal Koboi and officer Briar Cudgeon helping her out. The LEP originally suspects Artemis of orchestrating the goblin rebellion, but he is cleared of all suspicion after being inspected with a Retimager.  Holly Short, an LEP captain; Julius Root, the LEP commander; and Foaly, a centaur and the main technology supervisor for the LEP, make an agreement with Artemis to work together to stop the goblin rebellion, with the help of Mulch Diggums half-way through. In the end, to fulfill their part of the agreement, they help Artemis find his father, who had been missing for the past two or three years.Artemis Fowl and the Eternity Code
Artemis Fowl and the Eternity Code covers Jon Spiro's theft of the fictional C Cube and its recovery. Jon Spiro is an American businessman who has his bodyguard Arno Blunt kill Butler and steals Artemis's C Cube, which is a handheld supercomputer that he made from stolen fairy technology left over from the Fowl Manor siege in book 1. Artemis puts Butler into a fish freezer in an emergency attempt at cryonic preservation, and he is eventually resurrected by the elf Holly Short. Mulch Diggums (under the pseudonym Mo Digence) is hired alongside Loafers McGuire by Spiro to kidnap Artemis to access the C Cube, which is encrypted by an Eternity Code only Artemis knows how to decrypt. Holly agrees to help, but with the condition that Artemis and his allies are to be mind-wiped. With the help of the dwarf and Butler's sister, Juliet, they raid Spiro Needle, the building housing Spiro's company, and retrieve the C Cube again. The book ends with the fairies and Foaly mind-wiping the three humans, and Artemis gives Mulch Diggums a (supposed) medallion that Holly gave to Artemis in The Arctic Incident, which is actually a disc that will bring back his memories of the fairies.Foaly
Foaly is a centaur, technical genius, and computer geek. He works for the LEP, the fairy authorities, and is in charge of preventing humankind from discovering the fairy civilization. His intelligence makes him paranoiac, which causes him to wear a foil hat to "protect him from human mind-probing technology". He designs most of the weaponry, wings, and other technical gadgets that the LEP use, such as the 'Iris Cam'. His sarcasm and talkative nature often annoy LEP officers, though his greatest pleasure outside of his engineering is aggravating the notoriously bad-tempered Commander Root. He 'hitches' or marries a centaur named Caballine in The Lost Colony while Captain Short and Artemis are in Limbo, and apparently has foals. He has a rivalry with Opal Koboi, which she sporadically mentions throughout her dialogue.