The Sprites are a race of big talking crickets that live in the Other World.
The most well known member of this race is Gregory, a Sprite who lives on King Kai's planet and acts as King Kai's butler. Gregory appears in the Dragon Ball Z and in a few Dragon Ball Z movies.
The sprite elder is Montgomery, who appears in the Nintendo DS game Dragon Ball Z: Attack of the Saiyans. Montgomery is the guardian of the Spirit Crystals which are found in the Yemma Forest.
Also in Attack of the Saiyans, on King Kai's planet, another Sprite can be found in King Kai's house. This Sprite sells different items.