Hmm. The Deviants. For those of you confused.
The Deviants are an evolutionary offshoot of humanity; they are beings possessing a varied genetic structure that results in monstrous deformities, superhuman powers, and greater genetic instability compared to the mainstream human race. The Deviants have had various contacts with humans over the centuries, and their grotesque appearances have inspired many tales of devils, demons, and monsters. Some of the monsters of legend may actually be mutates bred by the Deviants. Even today, some Deviants have infiltrated human society; a number have even become professional wrestlers.
The Deviants were brought into being approximately one million years ago through genetic experimentation by the enigmatic Celestials. The Celestials altered the structure of the DNA complexes of the proto-humans whom they genetically transformed into the first Deviants so that physical characteristics radically changed with each generation. Thus a Deviant child will greatly differ in appearance from either of his or her parents. Similar experiments conducted by the Celestials at the time also resulted in the creation of the Eternals. Unlike the Eternals, the Deviants are not virtually immortal or indestructible. The sole known exception is the Warlord Kro, who, despite being vulnerable to injury, has lived for untold centuries, although he has concealed this fact from his fellow Deviants.
----Source:Marvel Wiki
As for Doom going to hell. My guess is this has something to do with Hela but Marvel could throw us a curve ball here.
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