Rain can't remember anything before he was experimented on. When he first awoke all he could feel was an empty feeling inside him like he was whole and how others had traits he desired. Most traits he'd end up not using though as he found he didn't actually like them on himself minus the orange glow he obtained for his internals, head fins and paw pads. There was also a hunger that could not be satisfied.

Art by Nummynumz.