Disney XD's animated Avengers Assemble has adapted famous Marvel Comics storylines, from "Squadron Supreme" to "Ultron Unlimited." The current season, retitled Marvel's Avengers: Secret Wars, has brought back tons of heroes and villains like Arnim Zola, Enchantress and The Wasp. The next hero making her return, though, is something of a fan favorite, with a fan-favorite actress on board to voice her.

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As announced in October, Hayley Atwell is back as Peggy Carter in this week's episode, "New Year's Resolution," in which she and Howard Stark team up with Iron Man and Captain America to save the time stream from Kang the Conqueror.

We see Peggy and Captain America reunite in the midst of a Stark family squabble, something fans probably thought they would never get to witness. Atwell is in top form in this preview, bringing her confidence and earnestness to animation as easily as she did to her live-action performances.

Atwell has made only brief appearances in Marvel properties since the cancellation of her ABC series Agent Carter. There are still opportunities for her to make a full live-action return, and who knows? Maybe if this episode is well received, that will send the right kind of message.

This week's episode of Marvel's Avengers: Secret Wars, "New Year's Resolution," debuts Sunday, Dec. 3, at 8:30 a.m. ET on Disney XD.