Gryphon is winged lion with archer on its back.
It is an air ranged unit that barely does any damage, but is easily killed by others.
It can be used to draw fire from enemy air units.
Its attack is unique in that it doesn't stop above target like other units do, but it flies back and forth over its target while while shooting weak arrow shoots. If selected you can make them not fly over, but instead keep getting them to attack a target, far more rapidly than they normally would.