Going back a minute or so in the past...
When Kunprio began to blast the clones away, sure that the two bodies that were defending themselves were the real ones, he failed to notice something. One of those clones, which had burnt marks all over and seemed on the verge of being destroyed, was actually blasted in Kentucky's direction.
When Kentucky fled... he carried that clone away with him without Kunprio noticing!
Well... was it a clone? No! Of course not!
'Life Style, Instant Recovery!'
Light Element circulated, and the burnt injuries were quickly healed. That wasn't a clone, but Rean himself. He purposely allowed himself to be struck by the fireballs while pretending to be one of the clones. At the same time, one of his clones began to defend itself right in the center, near Roan, after they split. It gave the image that the clone was the real body, while Rean was just a clone that posed no threat.
