The Foie Gras is Artemis' secondary. It is an Outland creature which rapidly fires damaging quills. Due to its high falloff, the Foie Gras is only effective at close range.
The Foie Gras' alt-fire is a damaging grapple.
"Foie gras" is a French dish made of the liver of a duck or goose that has been specially fattened.