MARVEL'S AVENGERS ASSEMBLE - "The Arsenal" - The season two premiere episode picks up with Red Skull crashing to Earth with a fleet of alien ships chasing him. The Avengers soon learn there's a villain in their midst a thousand times more dangerous than the Cabal ever was... Thanos! This episode of "Marvel's Avengers Assemble" premieres Sunday, September 28 (8:30 AM - 9:00 AM ET/PT) on Marvel Universe on Disney XD. (Disney XD via Getty Images)
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