Skills are innate abilities that Hector can possess to give him added powers.  They can be turned on/off at any time from the menu screen.  Some abilities he will start with; others must be found as you progress through the game.
GuardProtect yourself against enemy attacks by holding down the R1 button.Hector starts with it.
Perfect GuardPress the R1 button in the instant you are attacked to block any and all enemy attacks.Baljhet Mountains. (Southwest of the entrance from Abandoned Castle, past the long corridor, in the square shaped room).
Quick StepPress the X button and left analog stick when guarding to perform and invincible quick step.Abandoned Castle F1 (room SE of save room).
Double StepAllows a second quick step to be performed directly after the first one.Abandoned Castle F2 (NE room on the inside).
See DamageAmount of damage will be displayed.Hector starts with it.
See Enemy NameDamage an enemy to see their name.Hector starts with it.
BestiaryThis volume contains detailed information on every monster you have fought.Abandoned Castle F1 (room SW of save room).
I.D ChartView the evolution chart for all the Innocent Devils you have raised so far.Baljhet Mountains (in a chest past the bridge, near the waterfall).
I.D. Evo Crystal Defeated enemies drop these crystals, used when evolving Innocent Devils.Abandoned Castle B1 (area you break pillar to drop platform, atop the platform).
Weapon Combine Gather up materials and create weapons and armor.  Carry out via a command on the status screen.Abandoned Castle B1 (area you break pillar to drop platform, at the bottom).
Map CheckerMark the map to remind yourself of key locations.Garibaldi Temple F1 (In a chest in the upper room past stairs leading to 2F).
Steal Press the O button when the lock-on cursor is purple to steal items from enemies.Baljhet Mountains (north, on the corner past the save point across from Julia's Shop).