The Green Knight suffers no movement penalties for moving over or through any kind of terrain. He never suffers any movement penalties, even from such things as magical effects. He can even move through impassable terrain. He may not, however, move through other units. Nevertheless, the Green Knight does block line of sight and cannot see through anything himself that would normally block line of sight.

The Green Knight cannot be harmed except by magical attacks, Daemons or other ethereal creatures, though he may be affected by spells as normal.

He also cannot join or be joined by units or characters.