After being corrupt by something unknown, Ultron starts a regin over the earth and tries to wipeout the human race.
Tony Stark/Ironman(Robert Downey Jr.)- A billion industrialest, that retiared from being a superhero, but comes back after Ultron plans to destroy the human race.
Steve Rogers/Captain America(Chris Evans)- The leader of the Avengers and the World's first known superhero.
Thor(Chris Hemsworth)- God of Thunder, and Prince of Asgard.
Bruce Banner/Hulk(Mark Ruffalo, voiced by Lou Ferrigno)- The Gamma Scientist that turns into a Hulking monster when he's angry.
Clint Barton/Hawkeye(Jeremy Renner)- Master Marksman of the team, and partner to Black Widow.
Natasha Romanov/Black Widow(Scarlett Johansson)- the spy of the team, and partner to Hawkeye.
Pietro Maximoff(Aaron Taylor-Johnson)- A speedster, villian turned member of the Avengers. Twin-brother of Wanda Maximoff, who he is overly protective to.
Wanda Maximoff(Elizabeth Olsen)- A sorcerer, villian turned member of the Avengers. Twin-sister of Pietro Maximoff.
J.A.R.V.I.S/Vision(Paul Bettany)- An android created by Tony Stark to the help the human race and joins the Avengers. This version of Vision is similar to the T-800.
Sam Wilson/Falcon(Anthony Mackie)- A S.H.I.E.L.D. Agent that was convinced by Captain America to join the Avengers and he has mechanical wings making him able to fly.
James Rhodes/War Machine (Don Cheadle)- best friend of Tony Stark and the new member of the Avengers. .
Ultron(James Spader)- After being corrupted by an something unknown, possible Thanos, Ultron Starts a regin over mankind, has no reason to exist, because of it being flaud.
Ultron Drones- Ultrons Foot-Soldiers.
Thanos(Motion Captured by Damion Poiter, voiced by Keith David)- Cameo at the end of the film, on his way to conquer earth..
Baron Von Strucker(Thomas Krestchmann)- The new leader of HYDRA and the responsible for working for Scarlet Witch and Quicksilver
HYDRA Soldiers- Soldiers for Baron Von Strucker
S.H.I.E.L.D.- Strategic Homeland Intervention Enforcement Logistics Division.
- Director Nick Fury(Samuel L. Jackson)- Director of S.H.I.E.L.D.
- Agent Maria Hill(Cobie Smulders)- Nick Fury's right hand woman.
- Agent Carol Danvers(Katee Sackoff)- Nick Fury's head soldier of S.H.I.E.L.D.
- Agent Sharon Carter/Agent 13(Emily VanCamp)- Agent of S.H.I.E.L.D. and lover of Captain America.
- S.H.I.E.L.D. Agents(various actors)- Agents of S.H.I.E.L.D.
Wakanda is mentioned being attacked by Ultron.
Hank Pym is referenced by Maria Hill.
Doctor Strange is mentioned as being Wanda's mentor.
Loki's spear is seen in one of the S.H.E.L.D. labs.
Asgard is referenced by Thor.
The Winter Soilder is referenced by Black Widow.
Costumes and Appearences
Ironman would have a black and gold armor, similar to the one in the "Marvel Now" comics.
Captain America would were the same costume he wore in "The Winter Soldier".
Thor would were the same armor he wore in "The Dark World".
Hulk would look the same as he was in the previous films.
Hawkeye would still have the same uniform as he had in the previous films.
Black Widow would still have the same uniform as she had in the previous films.
Pietro and Wanda would have their Ultimate costumes in the film.
Falcon would have the same costume he wore in " The Winter Soldier".
Vision would have the appearance of a human, at first. Then, he reveals his robotic form, which is similar to an Ironman armor, with a greenish-grayish color, and it would match up with Paul Bettany's height and weight.
Ultron would have an appearence similar to his "Age of Ultron" comic book design.
The Ultron Drones would look similar to the Ultron Sentinels from the "Age of Ultron" comic book series.
Thanos would have the same look that he had in the first Avengers movie.
Main Article: Avengers: Age of Ultron Gallery