Marvel Studios' "Avengers: Infinity War" shocked fans with the demise of many Marvel Comics' superheroes, with only the core members of the original "Avengers" expected to return for "Avengers 4" (spoilers ahead):
"...having previously acquired the 'Power Stone' from the planet 'Xandar'...
"...'Thanos' and his henchmen—'Cull Obsidian', 'Ebony Maw', 'Proxima Midnight' and ''Corvus Glaive'...
"...intercept the ship carrying the survivors of the destruction of 'Asgard'.
"'Thor', 'Loki', 'Heimdall' and 'Hulk' are powerless to prevent them from extracting the 'Space Stone' from the 'Tesseract'...
"...as Thor is imprisoned, Loki is killed and Hulk is overpowered by Thanos.
"Heimdall then sends Hulk to Earth using the 'Bifröst'...
"...before being killed..."
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