'Avengers: Age of Ultron' Premiere Red Carpet

Iron Man star Robert Downey Jr., who smiled at Marvel's Avengers: Age of Ultron premiere with wife and producing partner Susan Downey on April 13, 2015, will also reprise his Tony Stark/Iron Man role in Captain America: Civil War.

Ruffalo returns to the Avengers sequel as Bruce Banner/The Hulk.

Evans will appear as Steve Rogers/Captain America twice in as many years in 2015's Avengers: Age of Ultron and 2016's Captain America: Civil War.

Thor star Chris Hemsworth reprises his role as the Asgardian warrior in Avengers: Age of Ultron.

Johansson makes her fourth cinematic appearance as Natasha Romanoff/Black Widow in Avengers: Age of Ultron.

Jackson smiled with wife LaTanya Richardson at the Avengers: Age of Ultron premiere. The superhero sequel is the actor's seventh film appearance as S.H.I.E.L.D. director Nick Fury; he has also appeared as the character in Marvel comics and on several episodes of Marvel's Agents of S.H.I.E.L.D.

Renner returns as archer Hawkeye in Avengers: Age of Ultron.

Cheadle, who posed with wife Bridgid Coulture at the Avengers: Age of Ultron premiere, reprises his Iron Man franchise character Col. James "Rhodey" Rhodes/War Machine in the superhero sequel.

Spader, who plays the titular villain in Avengers: Age of Ultron, posed with partner Leslie Stefanson at the film's premiere.

Captain America: The Winter Soldier star Anthony Mackie teams up in Avengers: Age of Ultron as Sam Wilson/Falcon.

After briefly appearing in a mid-credits scene after Captain America: The Winter Soldier, Olsen makes her Marvel debut as The Scarlet Witch in Avengers: Age of Ultron.

Iron Man franchise star Paul Bettany returns to play the voice of J.A.R.V.I.S. as well as superhero The Vision in Avengers: Age of Ultron.

Paul Rudd's own Marvel movie, Ant-Man, will be released July 17, 2015.

The How I Met Your Mother star reprises her role as S.H.I.E.L.D. Agent Maria Hill in Avengers: Age of Ultron.

Freaks and Geeks and Mad Men star Linda Cardellini will appear in Avengers: Age of Ultron as Laura Barton.

A new member of the Marvel family, 42 star Chadwick Boseman will appear as superhero Black Panther in 2016's Captain America: Civil War before starring in his own standalone feature in 2018.

Japanese actress Ryoko Yonekura smiles at the Avengers: Age of Ultron premiere.

Marvel mastermind Stan Lee signed autographs for fans at the Avengers: Age of Ultron premiere.

Avengers and Agents of S.H.I.E.L.D. star Clark Gregg posed with his wife, actress Jennifer Grey.

Agents of S.H.I.E.L.D. star Ming-Na Wen looked regal in a red dress and sheer cape.

Thor star Jaimie Alexander took her Lady Sif character to the small screen this year, appearing on Marvel's Agents of S.H.I.E.L.D.

Agents of S.H.I.E.L.D. star Adrianne Palicki rocked a floor-length lavender gown.

Avengers writer/director Joss Whedon smiled with Agents of S.H.I.E.L.D. stars Elizabeth Henstridge, Brett Dalton, Chloe Bennett and Iain De Caestecker at the Avengers: Age of Ultron premiere.