Sonax

Sonax is a villian in Kingdom Hearts: Heartspawn. He is a nobody and number V of The Final Six.

Post KH:H
At some point in his life, a young man named Osan lost his heart. His nobody became Sonax, one of six secret test subjects of Organization XIII. He was trained by Xaldin and Larxene to be their successor. Shorly before the Castle Oblivion incident, he and the other five successors were put in sleeping pods to presurve them for the future if the Organization was to fail.

Kingdom Hearts: Heartspawn
In KH:H, Sonax helped the rat, Cluny the Scourge in his war on Redwall Abbey. As ordered by Axon, he was to collect as many hearts as he could and capture Blain. He trapped Blain and his friends in Asmodeus' quary, while they were helping Matthias serch for the Sword of Martin. After rambling on how he was to capture Blain (and displaying his discomfort in being transformed into a ferret to fit the world of Mossflower) he and Asmodeus attacked the friends. After being defeated, he revealed The Final Six's plan, to capture Blain and use his superhuman heart to complete Kingdom Hearts. He left the weakened Asmodeus to die at Matthias' hands (or "paws") and escaped into a dark portal.

He later faced Blain and the rescued Kryke and Cath in The Castle that Never Was. After some dispute and confusion (due to the fact that niether Sonax or Blain and his friends recognized each other in their human forms), Sonax engaged the three, but lost. Just before fading away, Sonax remarked "There's more where that came from...", leaving the friends to face the remaining four members of The Final Six.

Weapons, powers and abilities
Sonax's weapons are Storm Claws, five curved, dager-like weapons. He holds two in each hand, between his fingers and grips the fifth in his teeth. His attacks are very fast, bit don't come in very big combos. Trained by Xaldin and Larxene, Sonax has the ability to control wind and lightning, creating fowerful storms. His elemental attacks are as follows:

Thunder Clap --- Slashes with both hands, shooting off sparks of lightning energy.

Squall Line --- His five Storm Claws form a ring around his hand and shoot powerful jets of wind. (In Mossflower, he climes on Asmodeus' head when using this attack.)

Spin Wind --- Swings in a circle, creating a pulse of wind that spreads out around him, pushing and damaging anyone near him.

The Grim Tempest --- Levitates in the air and creates a giant Lightning storm. Lightning bolts strike at his foes and is hard to dodge, but doesn't last long. This is Sonax's strongest attack.