Tonberry
How to obtain
Go to a place in the Centra continent that looks like an oil rig.  When you fight you will fight a Tonberry.  Dont make the mistake of underestimating him he is much more powerfull than you think.  Well kill 20 or so of them and you will fight the Tonberry King.  Once you defeat him he will join you as a GF.
Description
A black hole appears in the ground and Tonberry comes out with his little knife and lampton.  He walks toward the enemy and stabs them with the knife, as the word Doink appears above his head as a speach bubble.
Iggy's opinion
This is not a very good offencive GF but its call shop and sell high and familiar faces and haggle come in very handy especially in disc 4 since you can buy anything enywhere.  7.5/10

Apparently my awsome buddy Ivan thinks that the number of Tonberries you fight to get to the Tonberry King is 20 minus the number of Chef Knifes you have when you first enter the oil rig thing.  I never tried if before but if you do and it works please send me an e-mail telling me so that i can make it official.
Ability
Ability                  AP               Description
Magic
GF
Draw
Item
LV Down
LV Up
Eva+30%
Luck+50%
Initiative
Move-HP Up
Auto-Potion
SumMag+10%
SumMag+20%
SumMag+30%
GFHP+10%
GFHP+20%
GFHP+30%
Boost
Haggle
Sell-High
Familiar
Call Shop
Learned
Learned
Learned
Learned
Learned
Learned
150
200
160
200
150
30
70
140
30
70
140
10
150
150
150
200
Use Magic command
Use GF command
Use Draw command
Use Item command
Use LV Down command
Use LV Up command
Raise Eva up by 30%
Raise Luck up by 50%
Action bar full at start of battle
Recover HP as you walk
Automatically use potion when hit
Raise SumMag up by 10%
Raise SumMag up by 20%
Raise SumMag up by 30%
Raise GFHP up BY 10%
Raise GFHP up by 20%
Raise GFHP up by 30%
Boost your GF
Lower prices at shops
Sell for more money at shops
Easier to buy rare items
Call shops from anywhere
1