Missile droid
From Wookieepedia, the Star Wars wiki.
Missile droids were flimsy droids used in large numbers by the Galactic Empire. They were used in the Battle of Dubrillion, where they attempted to hinder Wedge Antilles. They spewed a seemingly infinite number of missiles.
These droids flew or hovered in the air, often at the same level as the cockpit of an enemy vehicle for example. When Wedge Antilles was engaged by these droids on Dubrillion however, he learned that they were not heavily armored, and a few blasts from an AT-ST could easily destroy them.
