Johnny

“This,” said Iucounu, “is my friend Firx, from the star Achernar, who is far wiser than he seems. Firx is annoyed at being separated from his comrade with whom he shares a vat in my workroom. He will assist you in the expeditious discharge of your duties.” Iucounu stepped close, deftly thrust the creature against Cugel’s abdomen. It merged into his viscera, took up a vigilant post clasped around Cugel’s liver.”
― Jack Vance, Tales of the Dying Earth: The Dying Earth, The Eyes of the Overworld, Cugel's Saga, Rhialto the Marvellous