Talk:Pokémon VS Digimon/@comment-2255534-20160107232957/@comment-26934487-20160108000233

"Proto-Adamantium
This is the original Adamantium created by Dr. MacLain. Proto-Adamantium is the official name for the metal that makes up Captain America's Shield. It has never been recreated and is the absolutely most indestructible item in all of existence. It has only ever been damaged or destroyed four times: by Doctor Doom with the powers he stole from the Beyonder[3], by Thanos with the power of the Infinity Gauntlet[4] , by Molecule Man and his total control over matter[5] , and by the Serpent after augmenting his strength with the fear of people from all over the world."

http://marvel.wikia.com/wiki/Adamantium