In Megaman zx can you still get omega zero biometal if you dont have Megaman zero 3 and 4 game packs

A: Yes you only need megaman zero 3 and 4 to fight the bosses from zero. Omega can be fought at any time once you can get to area n, once you beat him get the rock from the room beyond the boss rooms, but you have to be on normal or hard mode to find the rock once you beat biometal w you bring the rock to flueve in area x lab and he turns it into biometal O.