Not only are there boss battles in the game, but also Eidolon battles. Eidolons are your summons—if you have at least three Technical Points (TP), you can summon your Eidolon to help you out in battle. An example is Snow's Eidolon, the Shiva Sisters, who are also the first Eidolons you fight and obtain. The Shiva Sisters, after being defeated, can be used by Snow and only Snow. Each Eidolon also has a Gestalt form. When Gestalt mode is activated, the Shiva Sisters form to make a motorcycle. Eidolons can really help you out in battle, whether they're fighting with you and standing by your side or you're riding them and unleashing hell on your enemies.
The Shiva Sisters are Snow's Eidolon. When in Gestalt Mode, they merge together to make a motorcycle. Matching Snow's first name, all of their their moves seem to involve ice. Below is a table of moves the Shiva Sisters can perform while in Gestalt mode.
Ability
Cost
PS3 Control
360 Control
Description
Wheelie
3
+
+
Charge forward and deal non-elemental damage to target.
Spinfreeze
3
+
+
Deal Ice damage to surrounding targets and launch Staggered ones into the air.
Hecatoncheir is Vanille's Eidolon. When in Gestalt mode, he turns into a dual-sided large-barreled gun. He uses his harpoon-like arms to face his foes.
Ability
Cost
PS3 Control
360 Control
Description
Chain Cannons
1
+
+
Repeatedly fire on target with cannons; can be chained by repeating input.
Missile Tetred
2
+
+
Fire four missiles in turn at targets and surrounding enemies; can be chained by repeating input.
Piercing Ray
3
( or )+
( or )+
Blast target and interposing enemies with laser; can be chained by repeating input.
Force Blasters
4
Deal heavy damage to targets in range and launch them into the air.