Loki lures a hunter into The Temple of Darkness, a hidden tomb where the hunter's spirit enters the body of the Indestructible Destroyer, an enchanted suit of armor forged by Odin.

Scientist Paul Duval gains the power to turn himself (and whoever he touches) into living stone. As the Grey Gargoyle, he attacks Thor hoping to steal Thor's magic hammer, which he believes will help him gain immortality.

Calvin Zabo, an employee fired by Donald Blake for stealing, vows revenge and uses a chemical formula to turn himself into the super powered Mr. Hyde.