Elian is a member of HOLY.
For the most part, Elian seems to be rather stoic, rarely showing emotions. He does seem to enjoy using his Alter for HOLD.
The eyes and ears of HOLY, Elian is the cloned son of Martin Zigmarl; though the fact of such remains unknown until much later. Elian's Alter allows him to create and control electronic devices that can allow him to observe anyone or anyplace over large areas and is often referred to as "Absolute Perception". It is heavily implied that this Alter is a product of refinement and not a natural Alter, which could also be said of Elian himself, being a clone. He plays a relatively small role, though his information gathered is incredibly crucial in many key scenes. Toward the end of the series, Kyoji Mujo even uses more twin clones of Zigmarl, who are known as Elian 3 and 4, to control the mass areas of the HOLY HQ after it is reformed.
Absolute Perception: Absolute Perception allows Elian to create and control electronic devices that can allow him to observe anyone or anyplace over large areas. He can also access other electronics to show what his cameras see, including ones that don't work.
It has a manga counterpart that is called 'Viva Knowledge', used by T.T.