Grey Gargoyle (June 2, 1964) This Day In Comics
Paul Pierre Duval first appears in the title Journey into Mystery #107 (June 2, 1964).
He is a French chemist who spilled an unknown organic chemical compound on his right hand, causing a mutagenic reaction that permanently transformed the hand into living stone. As a result, Duval can turn any matter touched with his “stone” hand to a similar substance, with the effect lasting for approximately one hour. Turning his body to stone, Duval dons a mask and cape and becomes a criminal with the alias the Grey Gargoyle. Duval, however, becomes bored and decides to try to achieve immortality by confronting the Thunder God Thor and stealing his mystic hammer, Mjolnir. Thor is turned to stone in their first battle, but turns back to Don Blake when he falls over and strikes the floor with his hammer. As Blake he defeats the Gargoyle by luring him into the Hudson River in New York City, using a projection of Thor, leaving the villain buried at the bottom.
