A gallery of examples of Dermal Armor.
Torafusa (Fairy Tail) can alter the density of his skin.
Greed (FMA: Brotherhood) is known as the Ultimate Shield due to his Carbon Dermal Armor.
Alex Mercer (Prototype) in his armor.
Indra (Marvel) in his armor.
Bling! (Marvel) deflecting bullets off her skin.
The Hulk's (Marvel) skin can withstand virtually anything.
Skaar's (Marvel) skin has incredible durability.
Ethan James' (Dino Thunder) skin is impenetrable.
Kakuzu (Naruto) can change his skin to harder-than-steel earth armor.
The Third Raikage's (Naruto) body has earned the epithet of the "Strongest Shield" due to it being near-impenetrable, which, when combined with his Lightning Release Armor, is even more so.
Sendou Ryuuichi (Code:Breaker) can turn his skin's texture to steel and other hard substances to block attacks.
Tetsuhito Kagiroi (Tenjho Tenge) possesses an iron-hard body due to his clan's women drinking iron sand every night.
Rhydon (Pokemon) has a powerful rock-like skin.
Skarmory (Pokemon) has a powerful steel-like skin.
Jozu (One Piece) has diamond skin when he wants to.
Skin Bolic (D.Gray-man) can change his skin into a golden armor of solidified lightning.
Tōkajin (InuYasha) implanted Shikon shards into his body, turning it into an armor of stone.
Due to cellular degeneration, the Guardian's (Marvel) skin is five times as dense as the original Spider-Man's.
Monkey D. Luffy (One Piece) using Busoshoku Haki to darken and harden the skin of one arm.
Nnoitra Gilga (Bleach) using Hierro to pressurize his spiritual energy onto his skin, turning it iron hard.
A Quincy (Bleach) such as Ichigo using Blut Vene to flow spiritual energy into their bloodstream, turning it inhumanly hard.
Cang Du (Bleach) lives up to his epithet, "I - The Iron".
Samedi endures being thrown into a car unscathed.
Gatasubal (Yu Yu Hakusho) is composed entirely of a hybrid metal of combined steel and living cells, making it very difficult to pierce through
True to his surname, James Ironside (Blood+) can harden his skin to the point where it can easily withstand bullets and blades...
in Senator Steven Armstrong's (Metal Gear Rising: Revengeance) body harden in response to physical trauma, granting him nearly impenetrable skin.