Abilities & Weaknesses...
Touch Sensitive: Whenua is extremely touch sensitive, so much that he can feel attacks coming through the earth, feel even the lightest breathing and so on. This makes a surprise attack virtually impossible...
Intelligence: Whenua is incredibly smart, as are all Archivians. He's Empathic, can figure out most problems, etc, etc.
Master Of Arms: Whenua can effectively use any weapon he wishes, though he'd much rather stick with his katars.
Light: Whenua's eyesight is very poor above ground as it is. He's weak against light magic, or any spell which results in a flash of light.
Sound: Whenua's hearing is extra sensitive, making him doubly effected by sound damage.