Ventus

Ven (full name Ventus) is a character who will appear in the upcoming game Kingdom Hearts: Birth by Sleep. He first appeared in the secret ending of Kingdom Hearts II titled The Gathering. The video was continued in the secret ending of Kingdom Hearts II: Final Mix+, which was titled Birth by Sleep. In the video Ven was shown fighting against Master Xehanort and his apprentice with companions Aqua and Terra. He is the only member of the trio not to have a voice actor who previously portrayed a Final Fantasy character from Kingdom Hearts II, as Terra's and Aqua's portrayed Setzer and Paine, respectively. His most memorable role in the video is his capture by Master Xehanort, who teleports behind him and grabs him by the back of his head when Ven attempts to attack him from behind. Ven struggles against Master Xehanort's grip, but to no avail; Master Xehanort squeezes his head hard enough to crack his helmet, then freezes his entire body solid before letting him drop from the cliff. Ven's body is caught by Aqua after hitting the cliff wall, shattering his Keyblade and most of what remained of his helmet. When his face is fully revealed, apparently still alive (as his eyes are moving and trying to focus on Aqua), it is shown that he is identical to Roxas (even Roxas's wristband is there). The connection between the two is not explained or even confirmed as an existent connection, leading to many theories among fans. Ven is confirmed to be the fastest of the trio, using fast combo attacks and quick running speed. He holds his keyblade in his hand backwards (as seen in the new Famitsu screenshots, and in his left as seen in the hidden trailer in Kingdom Hearts 2 Final Mix+) and backwards. His currently known techniques are: Thundaga, Cure, Firaga Storm, Zero Graviga, Strike Raid, Fire Blitz, and Final Break.
His known Mode Changes are:
Thunder Bolt: Unleashes powerful lightning upon attacking.
Fire Blazer: Flames erupt from the Keyblade.
Speed Rave: Increases speed drastically, allowing Ven to execute slashes of greater strength.
According to an interview with Nomura, Ven is expected to play a huge role in the upcoming PSP game named after the video, perhaps even bigger than just being a male protagonist. In a video of unseen footage, Ven encounters Master Xehanort while at Olympus Coliseum. Ven asks who he is but then gasps as if he realized something. Master Xehanort goes on to say that Ven is losing something, but he hasn't lost it permanently. He then summons a lightning-like ball of energy in his hand like he does in the secret ending. He tells Ven, "In order to obtain it, give up!" and, "Now recover everything, and discover the truth!" This may be in regards to Ven's memory (akin to Chain of Memories), but this theory has yet to be confirmed. At Square Enix's latest convention, a playable demo of Ven in Cinderella's world, Castle of Dreams, was seen. In Castle of Dreams, Ven seems to have been shrunk down to the size of a mouse. This is likely to be magic that was cast upon him so he was the same size as the other mice from Cinderella. An image shows him holding his Keyblade and standing in front of Jaq as if he's defending him from something (most likely Lucifer since Lucifer has been revealed to be a boss for Ven to fight and images of the battle have been seen) and you notice Ven and Jaq are about the same size. Another image shows Ven carrying a ball of blue yarn while trying to sneak past a giant Lucifer. There is also a scene of him standing in the courtyard of a castle with Cinderella running past in the background - from the scale of this image it is assumed that the effects of whatever had shrunk him to the size of the mice in the first place had either worn off or been removed. He was also with Aqua when Maleficent told them that Terra's heart was descending into darkness, after hearing this he seemed upset and didn't want to believe it.