What?

Did you actually -play- FFVII? 'Cuz the game -does- tell you exactly everything.

This article is actually right.

There's Sapphire, Ultimate, Diamond, Ruby, and Emerald in the main FFVII.

The planet created the WEAPONS to protect itself - they came from the life stream. JENOVA was a threat, so the planet spawned them.

As far as who actually fought the main story WEAPONS, I think you could pick a party for the initial fight with the Sapphire Weapon in Junon - don't quote me on that though. Also, ShinRa blew off Sapphire's head with the mako cannon. Then you fight Diamond Weapon, and I think it's Cloud, Barret, & Tifa who fight it in Midgar and I don't think it's an option. Again, ShinRa uses the Mako Cannon, which they've upgraded, to blow up Diamond Weapon.

The other weapons are only optional bosses in FFVII. I've never played Crisis Core or any other of the 7 games, so IDK about them.