As Xavier scaled the building, the man made sure to stay out of sight until he had rounded a corner. There, he would find another car, and began fiddling with it. After a few minutes he pulled out a half full tank of gasoline. He gripped this tank in his cybernetic hand while his other arm pointed straight at the ground. Emerald flames slewed from his flesh hand, propelling him straight upwards like a rocket engine until he had literally flown up to the edge of the roof. He then switched the tank of gasoline to his right hand, his cybernetic arm holding the ledge of the building as his eyes peeked over it, searching for Xavier while he himself remained hidden.