While fighting the war in the mortal realm, Thor eventually learned of Loki's existence and the dark path he was now on. He searched for answers, a trail that would lead him to understand why Loki had fallen to corruption. The Thunder God, much sharper than the hammer he wielded, eventually tracked down the frost giants that had tricked Loki. The Jotunn were helpless before Thor as his anger descended upon them with the fury of a thousand storms, almost decimating the home of the Frost Giants. Thor spared their lives in exchange for the knowledge to obtain the battle armour of ancient kings. It was the only way to defeat his brother and make him perhaps see reason.