Ability souls

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Ability Souls found in Castlevania: Aria of Sorrow provide always-on abilities such as a double-jump and slide move that require no MP. These are generally obtained from bosses and used to discover more areas. All the souls are required to advance with the exception of the Gravekeeper, Kicker Skeleton and Hippogryph souls. The Gravekeeper is needed to access a secret area while the Hippogryph soul is a quicker and MP-free replacement to the Giant Bat soul that can only be found in a secret room. The Kicker Skeleton soul is the only soul that must be "harvested" from an actual enemy

Galamoth
Location	Underground Cemetery
Game	Aria of Sorrow
Some is uneffected by the Chronomage

Gravekeeper
Location	Castle Corridor
Game	Aria of Sorrow
Obtain Alucard's traditional back-dash manuever.

Hippogryph
Location	Forbidden Area
Game	Aria of Sorrow
Allows Soma to Moon Jump

Kicker Skeleton
Location	Floating Garden
Game	Aria of Sorrow
Allows Soma to execute a dive attack

Malphas
Location	Forbidden Area
Game	Aria of Sorrow
Allows Soma to Double Jump

Skeleton Blaze
Location	Forbidden Area
Game	Aria of Sorrow
Allows Soma to Slide Kick