Invulnerability is the ability to be impervious to harm and impact wherein most cases beings with this ability are also immune to all diseases and ailments. Kryptonians have this power, among others, while under Earth's Yellow Sun they are even invulnerable after death with only Kryptonite able to pierce their skin. Some Metahumans and other alien species also have varying degrees of invulnerability. This ability is possessed by very few beings, making it a rare power.
Clark Kent – Clark's invulnerability has grown stronger over the years he has spent on Earth, to the point where he is now almost fully indestructible. When he was younger, he could walk through fire and come out unharmed, his body was unaffected by warm and cold temperatures.
Brainiac - Brainiac is highly durable but not as much as Kryptonians.