Ecto-Vision

One of the more nebulous of vision-based abilities, Ecto-Vision is essentially the ability to perceive the life-force of another living being. Also referred to as soul-vision, individuals with this ability detect an aura around all living things. The intensity of the aura waxes and wanes depending upon the vitality of the target in question. In Mark Waid's 2003 revision of Superman's origin Superman: Birthright, he established that Clark Kent as a youth developed the ability to see the souls of other beings. Whether or not this ability is still considered part of canon continuity is unknown, as he has not used this power since. To date, Superman is the only Kryptonian to ever demonstrate this ability.