Fart Ninjas by Funrise are collectible action figures trained in the art of "gassassination" and martial farts. Designed to surprise and disgust, each ninja figure features 10 different motion-activated fart sounds that trigger whenever movement is detected nearby. Simply hide a Fart Ninja somewhere unexpected and let the sounds do the rest.

The Costco assortment brings together multiple figures from across the Fart Ninjas collectible line, which spans 7 series with a wide variety of characters. Each figure is compact and easy to conceal, making them ideal for pranks and gag gifts. The series is marketed as "Silent, Butt Deadly" and recommended for ages 5 and up.