Although the RX-78 suits are designated RX-78-1 to RX-78-8, the final digit indicated the design version of the unit, rather than its actual number.
Walaupun baju bergerak RX-78 dinamai RX-78-1~8, angka terakhir menandai versi rancangan unit tersebut, bukan angka sebenarnya dari unit tersebut.