The YVH S-series war droid was the space assault model of the YVH-series battle droid produced by Tendrando Arms. YVH 2-1S and YVH 2-4S were two S-series war droids that were sent on the Mission to Myrkr, and by 45 ABY, Tendrando Arms had developed the YVH-8 S-series battle droid.