Question: The Eternals are a fictional race of superhumans appearing in American comic books published by which organization, the original instigators of this process, the alien Celestials, intended the Eternals to be the defenders of Earth, which leads to the inevitability of war against their destructive counterparts, the Deviants?

Context paragraphs:
Druig: Druig is a fictional character appearing in the comic books published by Marvel Comics.  He is a member of the Eternals, an ancient and powerful race of superhumans.

Ikaris: Ikaris is a fictional character appearing in American comic books published by Marvel Comics.  The character is depicted as a member of a human offshoot race known as the Eternals.  Both Ikaris and the Eternals were created by Jack Kirby.

Makkari (comics): Makkari ( ), formerly known as Hurricane and Mercury, is a fictional character appearing in American comic books published by Marvel Comics.  The character is depicted as a member of the Eternals, a race of superhumans in the Marvel Universe.  He was created by writer-artist Jack Kirby in the 1976-1978 comic book series "The Eternals", where the name was spelled Makarri.

Inhumans: The Inhumans are a fictional race of superhumans appearing in American comic books published by Marvel Comics.

Celestial (comics): The Celestials are a group of fictional characters appearing in American comic books published by Marvel Comics.

Deviant (comics): The Deviants are a fictional race of superhumans appearing in American comic books published by Marvel Comics.

Eternals (comics): The Eternals are a fictional race of superhumans appearing in American comic books published by Marvel Comics.  They are described as an offshoot of the evolutionary process that created sentient life on Earth.  The original instigators of this process, the alien Celestials, intended the Eternals to be the defenders of Earth, which leads to the inevitability of war against their destructive counterparts, the Deviants.  The Eternals were created by Jack Kirby and made their first appearance in "The Eternals" #1 (July 1976).

Karkas (comics): Karkas is a fictional superhuman character appearing in American comic books published by Marvel Comics.  Karkas is a member of the Deviants, a monstrous offshoot of humanity created by the Celestials.  The character Karkas was created by writer/artist Jack Kirby, in 1977.

Terrigen Mist: The Terrigen Mist is a fictional substance appearing in American comic books published by Marvel Comics.  Terrigen Mist is featured particularly in stories that feature the Inhumans, a fictional race of superhumans.

Titan (Marvel Comics): In the fictional Marvel Universe, Saturn's moon Titan is a location appearing in American comic books published by Marvel Comics.  It is depicted as the home of the Titanian Eternals.  It first appeared in "Iron Man" #55 (Feb 1973) and was created by Jim Starlin and Mike Friedrich.  The Titanians, also known as Titans, were later retconned as being an offshoot of the Eternals, which had been created separately by Jack Kirby.

Supporting paragraphs: Eternals (comics) Celestial (comics)
Answer: Marvel Comics