The Gnomeregan Covert Operatives, colloquially known as the Gnomeregan Covert Ops, is the official organization of agents, assassins and spies in service to the nation of Gnomeregan. Taking directive directly from High Tinker Gelbin Mekkatorque, they are tasked with both defending him and eliminating threats to the gnomes of Gnomeregan.
The leader of the Gnomeregan Covert Ops is unknown. Many operatives of the organization take on false names so that their true identities are hidden.
Image from Lesli Steelspark's article on Wowpedia.