Hive Drone

In Real Life, insect drones are males who mate with a queen then die. In fiction however, "drone" is often for anything in a Hive Mind not in a position of power. Sometimes they will resemble hive worker insects and will be sterile, do nothing but work, and care for the Queens young. Other times they are the army of the Hive. They are nearly always Mooks. Don't expect them have individuality, have names other than numbers or letters, or even look different from each other.

Live Action TV

 * The Borg from Star Trek. Subverted with Hugh then Seven of Nine as they gain individuality.

Video Games

 * In StarCraft, most members of the Zerg, with the exception of Kerrigan, the Overmind, and the cerebrates, fit this description. There is even an actual unit type called a drone whose only purposes are to harvest resources and morph into structures that let you make other types of Zerg.