"Do NOT cross me."
Free is one of the Become, a group of infected and mutated humans. While typically the Become are near-mindless, some retain (and even gain) intelligence. Free is among them.
A powerful psychic, his signature “flash” technique is used to catch opponents off guard before he strikes. It is unknown if he teleports or simply moves extremely fast, but the effect is all the same: devastating.
Free consumed Drake/Marshall in a fight on the Bird of Prey, shortly thereafter entering into a cocoon. He emerged with a new body, one that looked indistinguishable from a typical human. At this time he also displayed the ability to shapeshift at will.
After initially telling others to refer to him by any name they would like, he finally settled on the name Kin.