Emerald & Ruby
Okay, Ruby first , it's the easiest. Equip any character with a: Ribbon (acc), W-Summon,
Mime, Knights of the Round (lv.2) linked with HP Absorb (found in Wuti, in the cat house (by Yuffies house) there are some stairs at the back (hard to see, climb up wtih O)up there will be HP Absorb.)
If you wont, equip Final attack with Rivive - it isn't needed.
nMake sure you have 9999hp and 500+mp. Kill the other two party members before the battle. Ride a gold chocobo or the Highwind into Ruby, and start the battle.
First, cast w-summon KOTR on the arms behind the character. The first KOTR should kill the arms, the second hits Ruby.
After this its a simple case of 'Mime'ing for the remainder of the battle. It doesn't matter how low your hp is, HP Absorb will fill it up to max.
There it is - no other method is simpler. It may take ages, but it really works!!!
Now for Emerald. Have the same set up as before, but keep the other characters alive with Mime materia and then any materia you wont to level up.
Have your hp 9999, and the KOTR carrier with 500+mp.
Have the KOTR character W-Summon KOTR, and from the on just mime! It took me 5 attacks to kill it!
P.S. Emeralds 'Air tam storm' does 1111 damage * the no. of materia the character has (but dont worry, you'll kill it before it can use this.).
This battle really is a breeze.
Ruby and Emerald give 50000 AP, and I can't remember how much Exp., so you might wont to eguip triple growth weapons (Coud and Cid only!).
Good luck and have fun!!!
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