Developed in 24 ABY, the 2WD-22 medium defender droid soon became one of the Eniam Army's primary war droids. They were much larger than their 1WD-series counterparts, and were designed to intimidate invaders. The defender droid's design was based on that of a Drijoken, but scaled up. They had the dimensions of a weightlifter - 2.1 meters tall, 1.2 miters wide (with arms held at sides), and 0.7 meters long at the chest.