Although not technically a GF, he does have a GF card. He's actually part of Rinoa's Limit Break, doing different things like counterattacking, reviving, and finding items.

FF8 -Angelo (LIMIT BREAK) ATK: Angelo Rush, Angelo Cannon, Angelo Strike, Angelo Recover, Invincible Moon, Angelo Reverse, Angelo Search, Wishing Star

This fish-like beast is the second most powerful Aeon in FF10, and is Seymour's mother's fayth. It can cause instant death with normal attacks. Though it is mostly used against you throughout the game, it can become yours through a side-quest.

FF10 (SUMMON) -Anima ATK: Pain (special attack), Oblivion (Overdrive)

This is the most powerful summon of FF9. The long introduction sequence (straight out of Transformers) involves it coming in as a huge dragon-headed airship, and changing into a vaguely robotic humanoid. It pounds the enemy repeatedly with Shadow damage.

FF9 (SUMMON) -Ark ATK: Eternal Darkness

The Queen of the Summoned Monsters, Asura gives one of three effects depending on which face she displays. She either heals the party, gives Protect status, or casts Raise (Life). In FF2 (NA) there was no Protect status, so that effect was replaced with a stronger healing spell.

FF4 -Asura ATK: Armor, Cure 3, Life 1

Belias the Gigas, the Esper of fire, represents Aries, and is the weakest Esper of the game. He is the incarnation of Velius in Tactics.

	Tactics (CHARACTER) -Velius
	FF12 -Belias ATK: Painflare, Hellfire

Thar she blows. Bismark is a white humpback whale who has a strong water-based attack.

	FF6 -Bismark ATK: Sea Song
	Unlimited -Bismark SOIL: Shark Grey + Water Blue + Crusher White

The ultimate Summon in FF6 and FF7. In FF6, Crusader consists of three knights who attacked for non-elemental damage. Unfortunately, the attack damaged allies as well. In FF7, there are thirteen different knights, based on King Arthur's Knights of the Round Table (hence the name) that cause an insane amount of damage which is only useful for fighting the optional bosses. The different knights fly through a psychedelic background and slice and dice the enemy using multiple weapons.

	FF6 -Crusader (NA) / Jihad (JP) ATK: Purifier
	FF7 -Knights of the Round ATK: Ultimate End

Cuchulainn the Impure, the Esper of poison, represents Scorpio. He is the incarnation of Queklain in Tactics. (Note: Pronounced Koo-kuh-linn)

	Tactics (CHARACTER) -Queklain
	FF12 -Cuchulainn ATK: Curaja, Malaise, Blight

A blue one-eyed giant who causes ultimate ice damage.

Tactics -Cyclops ATK: ???

This summon looks very much like a winged demon from hell and bears a slight resemblance to Chaos (see FF1 and FF7). He emerges from a ball of liquid blackness, doles out gravity-based damage (one of the only summons who do), and transforms into a flock of bats that fly away.

	FF8 -Diablos ATK: Dark Messenger
	FF11 -Diablos ATK: Ruminous Omen, Camisado, Somnolence, Nightmare (Astral Flow), Ultimate Terror, Noctoshield, Dream Shroud, Nether Blast, Cacodemonia
	FF12 -Diabolos (ENEMY) Though not directly related to the Diablos summon, it does share a few characteristics. CP: What strange Change does Magicite work on creatures, a perfect Example being this Gargoyle of the Lhusu Mines. Its Form inspired the commonly held Misconception in Bhujerba that the Creatures in its Magicite mines are Visitors from an Otherworld.