Just as there appearance suggests they are twins but clypton believes that his brother was adopted. Clypton the less buff gun handler's personality is never wanting to get up close and personal because he has a horrible case of claustrophobia and is always worried about him or his brother getting hurt. Meanwhile xenon is the exact opposite being stronger and more up close with his sword. Clypton is the scientist not wanting to get his hands dirty while his brother is the headstrong ninja that is always in the mood to fight.