Eden
Elemental: None
Starting Level: 30
Starting HP: 4786
Where do I get it? After you beat Bahamut in the Deep Sea Research Center you can keep going deeper underwater. Well below the surface is the Ultima Weapon, if you have enough steam power left to reactivate the excavation site. Eden, the 'ultimate GF', has to be drawn from the ultima weapon during the battle.

GF Attack: Eternal Breath: Eden's attack is the most powerful in the game by far. Without boosting it can do around 13,000 points of damage! And since the animation is SO LONG you'll be able to boost all the way up to the 250 maximum and cause about 35,000 points of damage.

Useful Abilities: Devour is one of the most hilarious abilties in the whole game and i always find it fun. This ability allows the character to walk up to an enemy and just eat it. Depending on the enemy you eat it could either boost your stats or kill you, so watch out. I also like the Luck+50% ability.
Ability List
Ability

Spd-J
Eva-J
Hit-J
Magic
GF
Draw
Item
Mad Rush
Dark Side
Devour
Luck+50%
Expendx3-1
SumMag+10%
SumMag+20%
SumMag+30%
SumMag+40%
GFHP+10%
GFHP+20%
GFHP+30%
GFHP+40%
Boost
GFAbl Med-RF
AP Needed

Learned
Learned
Learned
Learned
Learned
Learned
Learned
60
100
Learned
200
250
40
70
140
200
40
70
140
200
10
30
Leads To...

Nothing
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SumMag+20%
SumMag+30%
SumMag+40%
Nothing
GFHP+20%
GFHP+30%
GFHP+40%
Nothing
Nothing
Nothing