Quote:I thought that i would randomly post a walkthrough for these hard guys...
even though they are very easy if you follow my guid exactly!

Emerald

First make sure your characters can obtain health of above (amount of materia x 1111), due to Aire Tam Storm (which does the amount of damage equal to amount of materia x 1111). Mime is necessary, and preferably more than one, however if that is impossible, 1 will do.

First, equip the following materia onto your strongest party member(an = means it must be linked): Final Attack=Phoenix (not necessary but may save your life); Knights of the Round=HP Absorb; mime; as highly powered HP+ materia you can get. Hold no more than 8 materia (ad preferebly on materia slots which add advanced growth to materia). Weapons do not count for much in the battle against Emerald weapon, so any weapon will do. Also, Final Attack=Phoenix only needs to be equipped on 1 party member. A necessity for emerad weapon is the Underwater materia, which should be equipped on your weakest party member.
In this battle use KOTR with the character that has it equipped, then just keep using mime. Because KOTR is linked with HP Absorb then it will heal the character that used it to full health. Then just keep using mime. If one of your party members dies the do not worry- if you revive him you will have to use KOTR again to keep up the mime tactic.
Just keep this up. Eventually 1 or 2 of your characters will be dead, and if you are extremely lucky you will still have enough MP to cast Phoenix. If you feel you are nearing the end of the battle (Emerald has around 1.7 million HP) use a Turbo Ether, or an Elixir, or any item that restores most if ot all your MP, the let your last character die. When this happens he will use Phoenix, thus reviving all other party members and himself. Then just lay into him with KOTR (and if that is only lvl 1 then the strongest attacks you have- these tend not to be summons or magics.) If you don't want to risk dying against him then do not allow your last character to die. Instead, just keep using mime untill Emerald is dead.

Ruby

Have roughly the same materia as last time on your STRONGEST PARTY MEMBER ONLY! Have him equipped with KOTR=HP Absorb, Final Attack=Phoenix, mime and as many HP+ as you need. Also equip him/her with any materia you want to level up. MAKE SURE HE/SHE HAS A WEAPON/ARMLET THAT HAS MATERIA GROWTH!!!
The bad thing about this encounter is that Ruby wants to fight one on one, so kill your other weaker party members prior the battle. Make sure the surviving member has the ribbon equipped. If you don't have one, then use a vaccine at the start of the battle. If you can't do either of these then do not bother fighting.
Now just lay into him with KOTR mimed and eventually he will die. There is no helping the other two party members, without risking your strongest being dragged into sand. Ruby always makes sure that two members are either dead or dragged into sand.

Once you have beaten these two talk to the traveller in Kalm(is it? Please confirm.) to recieve a Gold Chocobo (which has very low stats compared to a Bred Gold Chocobo), Master Magic (which allows the use of all magics in the game), Master Summon (which allows unlimited use of all summons in the game) and Master Command (Which allows use of most commands in the game, excluding: Slash All, Flash, 2x Cut, 4x Cut, Steal, W-Summon, W-Magic, W-Item). These should make you one hell lot more powerful!