Final Fantasy VIII/Guardian forces

Quezacotl
How To Obtain

Quezacotl can be obtained in the First Disk of the game. Once you gain control of Squall in his classroom on the second floor, log on to Squall's study panel in the back of the class. Select the option Tutorial and the GF will be automatically received.

Special Attack

Thunder Storm - Deals lightning damage to all damage. Effective against machine and robotic enemies.

Useful Abilities

Card Mod: Allows you to turn cards that you have collected into useful items. Mid Mag-RF: Allows you to upgrade low-level spells into mid-level spells.

Shiva
Special Attack: Diamond Dust

Element: Ice

Ifrit

 * How To Obtain: Defeat Ifrit at the end of the Fire Cavern.
 * Special Attack: Hell Fire- Deals fire damage to all enemies.
 * Useful Ability: Ammo-RF

Siren
The Siren, a quite powerful GF can be drawn (using GF draw ability from GF junction) from Elvoret during the fight with it on the communication tower (disc I) before escaping from indestrustable X-ATM092.

If you have forgotten to draw it from Elvoret, you can either draw it from from Tri-Point in the Wind Cellar of the Ultimecia's Castle (disc IV).

It's special power is "Silent Sound" that causes a little non-elemental damage against enemies (rarely on bosses) plus 'silence'.

The Brothers
Special attack: Brotherly Love

Sacred lovingly catapauls Minitaur skyward after lifting the ground from under his foes. The two coliide in air.

Deals earth damage to all enemies.

Diablos
How to obtain: Use the magical lamp from Headmaster Cid.

Name of move: Dark Messenger

Move type: None ( damage done determined by Diablos' level)

Useful Abilities: Mug, Enc-None, Time Mag-RF, and ST Mag-RF

Carbuncle
How To Obtain: After Edea makes her speech in Deling City, two creatures will melt from stone on an adjacent building, jump onto the ground, and leap behind rooftop where the speech took place. Draw from any of the two Iguins.

Special Attack: Ruby Light - Casts reflect on all the party

Useful Ability: Auto-Reflect

Leviathan
Special attack: Tsunami

Deals water damage to all enemies.

Pandemona
Pandemona can be obtained by drawing from Fujin, during the battle with Fujin and Raijin in Balamb.
 * How To Obtain

Tornado Zone - Absorb all enemies into a bag attached on left shoulder, and blow them out. Does wind elemental damage to all emenies.
 * Special Attack

Spd-J: Junction spells to Speed. Spd+40%: Automatically increase character's gauge bar filling speed.
 * Useful Abilities:

Cerberus
Special Attack: Counter Rockets, casts Double and Triple to all active members of the party which allows a party member to use a spell twice or three times in a row.

Doomtrain
Special attack: Run away train

Deals non-elamental damage to all enemies

Bahamut
Bahamut, King of Dragons.

Special Attack: Mega Flare

Jumbo Cactuar
Special Attack: 10,000 Needles