"Hahahahaha!" Prometheus began to laugh. "This is the legendary power of Models X and Z together!? That was pathetic! You two are still NOTHING compared to Model W!"
His face pressed against the hot asphalt of the street, Vent could see as his sister was defeated by Prometheus' attack, her body crashing to the ground, and the red sparkles of light that showed Model Z separating from her, just as Model X had separated from him.
No way, he thought, reaching out to her. Model Z seemed to stare at him. We couldn't beat them even with the others' help?
"I couldn't protect them... even Aile," he gasped painfully. "I need the power to protect them..."
"Vent." Model X was there, speaking to him in low tones. "This is your last chance. If you combine the power of the two Biometal fragments, you may be able to win this fight. I can't be certain whether or not you'll be able to bear the strain when our powers are combined."
"Its your decision. You alone must make it," he heard Model Z say. "Do you have the will to fight? Do you have what it takes to continue where that brave man and these strange youngsters have left off?"
Vent reached out, his hand trembling. "Model X... Model Z..." he whispered. "Power... I need your power!"
His expression hardened as he made his decision. "I need to protect the people... All of them!"
Light blazed within Model Z's crystal, as text appeared. The light swirled around it, and around him. Prometheus and Pandora ceased their actions and watched, sour looks on their faces.
"Give me the strength to fight for those I care about!"
Model Z was with him in a flash, fit into his hand. Light consumed his form in an instant, and Prometheus grit his teeth in anticipation as power exploded from the Model X Chosen one and blasted the rubble away from him.
Bathed in the light and the power, Vent hovered up into the air, his hair lashing about and his eyes closed, as data poured out in streams from Models X and Z in both of his hands. R.D. and the others were coming too, only for them to be blinded as the light overwhelmed them.
Slowly, a figure was emerging in the light, covered in armor. Slowly, Vent opened his eyes as lines of light traced around in the crystal in his helmet's forehead. He clenched his muscles, and six blades of armor-like hair burst out from the back of his head, and his eyes and helmet crystal began to glow a bright blue-green color. A weapon appeared in his hands, a shining blade of light exploding out from the end of it as he swung it, dispersing the light.
"Vent... our strength..." Model X said in his mind.
"... is yours!" Model Z completed.