Gash was a male Ferengi, regarded as the best forger in the Ferengi Alliance. He was unusually short, with especially large ears, and very poor personal hygiene.

In 2376, Quark contracted Gash to forge the provenances for three counterfeit Grisellan totem icons he intended to sell to a group of Yridians. That same year, he was hired by Dav, on behalf of Chek Pharmaceuticals, Eelwasser, and Brunt to forge a marriage contract indicating an indefinite marriage between Rom and Prinadora. Gash ultimately admitted to both, caring less about his payment than the challenge each job entailed. (DS9 - Worlds of Deep Space Nine novel: Ferenginar: Satisfaction is Not Guaranteed)