Inhumans

Death	Blackbolt	Crystal
Gorgon	Karnak	Lockjaw
Medusa	Rhino	Triton

Inhumans were a race of beings who diverged from mainstream humanity twenty-five thousand years ago as a result of genetic experimentation on primitive man performed by the alien Kree to create a race of superhuman warriors to serve the Kree. They eventually succeeded in fashioning a small tribe of highly genetically advanced human beings, but abandoned their plan to make immediate use of the fledgling race dubbed Inhumans.

The Inhuman named Death possessed the Terrigen Mist, a chemical catalyst for human mutation that made him an important aid to Apocalypse and earned him the rank of Horseman. The Mists were mutagenic and how Death was able to turn his ordinary countrymen into the most extraordinary of creatures.

In our reality, it was the Inhuman geneticist Randac who the Terrigen. Believing the substance to be the key to making great genetic advances within a single generation's time, Randac subjected himself to total immersion in the Terrigen Mist and emerged with mental-manipulative powers rivaling those of the Eternals. Elected ruler because of his genetic superiority, Randac unselfishly instituted a program by which all Inhumans could undergo Terrigen treatment if they desired. The program was halted when about half of the Terrigen subjects developed radically nonhuman mutations. It was thereafter decided that individuals would only undergo treatment after being thoroughly tested, but the damage to the gene pool was already done.