User blog comment:IamJakuhoRaikoben/Chapter 334: Sin and Sacrifice, Review./@comment-203.215.120.188-20130608120211/@comment-4829046-20130608120748

Adamantium is Marvel-exclusive. Adamantine, Adamanite are usable here. Also I prefer to think the blasts that hit Gray were simple blasts like in Dragon ball, with no metal in them.