Hardest boss in the game

[Negative]

Ruby Weapon..........almost impossible to beat without KoR

Actually KoR make ruby even harder because 9 times our of 10 he imediatly retaliates with quicksand twice and that knocks your party down to one. I think the best sumon is bahamut zero because it by-passes rubys godly defense stat.

Well peronally when i bet him with KoR he just cointered with ultima all times. Then i could heal up easily.

Well this is just a personal experience