MARVEL'S AVENGERS ASSEMBLE: "GHOSTS OF THE PAST"

Marvel has released video from "Ghosts of the Past," the episode of Avengers Assemble premiering Sunday at 8:30 a.m. (ET/PT) on Disney XD.

To watch the first clip, CLICK HERE.

To watch the second clip, CLICK HERE.

Here's how the episode is described:

"Red Skull has information that could help the Avengers save the world from Thanos, but an intruder kidnaps Skull before they can retrieve it. Cap discovers that the trespasser is none other than his old partner Bucky Barnes, now the Winter Soldier, who's back and seeks revenge."