#Sonia sprites series
The name Koboi sounds both as "cowboy" and " kobold", a temperamental sprite of German folklore who becomes outraged when not fed properly, and who sometimes is referred to as a spirit of caves and mines, which fits since the fairies of the series live underground. Described as an "insane, power-mad pixie" and an outrageous character that is confident of her own intelligence in a way that annoys other people, this beauteous "pixie with the golden touch" contributes to the Colfer idea that fairies are basically as bad as humans – and fight even dirtier. With statements such as "before her second birthday she had dismantled her first hard drive," the Opal Koboi character comes off as precocious, but not in a positive way. She then falls into a self-induced coma as part of a plan to escape imprisonment. In the ensuing struggle, Cudgeon is electrocuted to death by falling into live plasma tubes and Koboi is incapacitated. Koboi flies into a rage and attacks Cudgeon. However, at the climax of the book, Artemis reveals that Cudgeon plans to betray Koboi. She employs Lieutenant Briar Cudgeon, a LEPrecon officer who was disgraced in the prequel, as her partner in her attempt to stage this coup deep in the bowels of the Earth. Koboi was written in this second book of the series as an evil genius responsible for the highest level of planning and execution of a war by goblins using outlawed lethal lasers against the Lower Elements Police Reconnaissance (LEPrecon) police squad, shutting off all the LEP's power and blaming her only scientific rival Foaly, Holly Short and Artemis Fowl for the entire affair. Colfer first brought the Opal Koboi character into the Artemis Fowl series through the May 2002 publication of Artemis Fowl and the Arctic Incident.