It was determined at the Colicoid Foundry that the original protocol droid designs were too alien, and that Humanoid races found them … off-putting. So with the new series the moved away from the giant cyclopian head and multi-jointed arms that resembled their insectoid creators. But they could not be persuaded to move to a bipedal design, it was just beyond sense to the engineers. But the humanoid should be pleased they now have two eyes to look into when dealing with the their Separatist overlords.

Head and torso are from a GI Joe Valor vs Venom Bat figure. The arms are SW General Grievous. The legs are from a SW Droideka figure.