Possible Clues:

• Warlord in "Avengers: Infinity War"
• Marvel villain who said, "I am inevitable"
• Marvel villain who collected the Infinity Stones
• Marvel supervillain
• One of the Eternals, in Marvel comics
• "Avengers: Infinity War" villain
• Villain played by Josh Brolin in most "Avengers" films
• Villain played by Josh Brolin in most 'Avengers' films