Psycho Ball? In case you're wondering, this attack is one of Athena Asamiya's specials. For some weird reason, I see Clefable tossing one of those projectiles (the Shadow Ball, that is.)

Oh and those who are familiar with the King of Fighters, Athena underwent TONS of costume changes over the years and this is from the Maximum Impact series. The new one (KoF XII) have her wearing a navy blue sailor suit.