Well, Hexel doesn't talk much. She'll always be acting secretive and mysterious around other people. She's also an escaped experiment. Irken scientists made tests on her because she's albino (white with blue eyes.. and tongue). The experiments were to try and alter her biosignature in improving the Irken race and making them more powerful. Right before she escaped, the last experiment (and the most painful one) gave her the ability to release an acidic plasmic substance from her skin--the rainbowy stuff.