She is composed of adamantium and therefore virtually indestructible .
Ultron - 13 constructs Alkhema as a second attempt to create a mate , basing her on Mockingbird 's brain pattern .
Alkhema is composed of adamantium and therefore virtually indestructible .
Ultron - 13 constructs Alkhema as a second attempt to create a mate , basing her on Mockingbird 's brain pattern .