Malevolent Metamorphs Menace Mankind: Sinister Silicon Selves

Among the various living creatures residing on Earths One and Two, there is a diverse array of animals and plant life. The predominant life form, if not the most numerous, on these worlds is mankind. But while most life is carbon based, an oddity persists in these two reality. The presence of metamorphae on Earth-One, along with two visitors from the dimension of Quarrm, and the sand-beings of Earth-Two along with two glass-based leaders. 

For centuries, a variety of humans had been transformed into the Metamorphae, including ancient Roman centurion Algon, modern-day architect Eudife Bulwalk, government agent Urania Blackwell, and most famous of all... Rex Mason, who became Metamorpho the Element Man. Each of these individuals gained their transformative bodies and abilities after exposure to radiation originating from the Orb of Ra, which was an ancient meteorite harnessed to create this new species. While limited in number, this species was powerful.

Similar creatures resided in the Quarrm Dimension, and one of these energy entities accidentally was pulled into Earth-One's realm of existence during a reactor experiment using Kryptonite. Although Superman intervened and saved lives from the resulting explosion, the exposure to this potent energy left him unconscious on the sand. From his imprint upon that sand, the Quarrm creature created a body for itself resembling Superman, and sought to steal energy from the Man of Steel in order to sustain it. After a battle with another Quarrm creature, this "Sand" Superman returned to Quarrm. Similar creatures from the planet Rhynthar known as the Dust Devils invaded Rann-One and Earth-One. 

For centuries, a parallel specifies of bipedal beings resembling humans existed in the Gobi Desert. These Sand-Beings were limited in mumber but due to the nature of their being, used the sand to form bodies for themselves. As native inhabitants of Earth-Two, for centuries they gained mastery of their physical forms, which protected these energy entities.

By the time that a research party led by Jay Garrick discovered them, these Sand-Beings had created a solar powered weapon based on technology which sustained their lives. With this, they planned to unleash their vengeance upon mankind, which they felt subjegated the sand. Led by the humanity-hating leader Ben Otan, the half-dozen changelings were poised for world conquest.

Displaying an ability to transform between malleable sand and hardened glass forms and even form their bodies into various shapes, these Sand-Beings fought Jay's alter ego the Flash to a standstill. Only when the Flash tricked them into absorbing the full energy of their solar lamp were these being defeated... and seemingly destroyed forever! Although this tale seemed outlandish, Jay would tell it to his colleagues in the Liar's Club, and it would seem to other friends as well...

In fact, it seems that Jay shared what he learned of the Sand-Being's technology with his fellow Justice Society teammate Wesley Dodds. Dodds, as the Sandman, was obsessed with sand-based items, and from this he developed a silicoid gun. However, its instability caused it to explode, bathing his sidekick Sandy Hawkins in energies that transformed him into a new life form. This Silicon Creature, like the Sand-Beings, had metamorphic qualities during its two decades long existence. The former member of the All-Star Squadron, Sandy, eventually regained his human form... and gained earth-shaking powers!

Rex Mason, unlike the other Metamorphae, felt grounded by the love of his fiancee Sapphire Stagg, and despite interference from her father Simon, ended up marrying her. Although a loner, Metamorpho found acceptance as an honorary member of the Justice League of America and, years later, as a member of Batman's Outsiders.