Siren from Elvoret
Carbuncle from Iguion
Leviathan from NORG
Pandemona from Fujin
Alexander from Edea
Eden from Ultima Weapon
In case you forgot to Draw these out of each boss, you can draw them out of the bosses in Ultimecias castle, right when you are defeating them in order to get you abilities back, this works great in case youre having troubles defeating Ultima to get Eden.