Vex is the smallest, and is a year younger than Zeta and Kenai. Zeta is only a few months older than Kenai. Vex and Kenai often bicker. Don't let his small height fool you, he is very skilled and has outstanding reflexes. No one really knows why he wears a belt over his eyes.
He has something that he calls his second sense. His second sense is hard to explain.... but he often gets these weird hallucinations and dreams.
Kenai thinks the whole second sense thing is a bunch of bs, while Zeta honestly doesn't really know what to think of it. He believes it's just Vex's imagination running wild.