Vibranium

"That's vibranium. If I use this one, World War III won't be better without this. Now the Schnee Wehrmacht would love this one! Right? Well. I hope you like vibranium. Schnee loves it too... even for Marvel Comics. Boy, I love Marvel Comics! Also DC too..." --Su Ji-Hoon, The Day We Struck Vibranium

Vibranium is a fictional metal appearing in American comic books published by Marvel Comics. It is noted for its connection to Black Panther, as his suit is made from vibranium and is found in his native homeland of Wakanda. Antarctic Vibranium or Anti-Metal, is created by artificial means, in contrast to natural, or Wakandan, vibranium. Vibranium is also commonly known as one of the materials used to construct Captain America's shield.