This is our third Avengers post in the past 24 hours, following extensive details on The Avengers and the sequel from director Joss Whedon and the announcement of the theatrical marathon of all the independent Marvel superhero movies. Speaking of which, tickets are now on sale for the mini-festival of Iron Man, The Incredible Hulk, Iron Man 2, Thor, and Captain America as well as the subsequent midnight showing of The Avengers. But if you'd rather skip straight to the character posters of Scarlett Johansson as Black Widow, Robert Downey Jr. as Iron Man, and Chris Evans as Captain America, hit the jump.  The Avengers opens on May 4. [Update: A few more posters have hit the web, including Hulk and Samuel L. Jackson as Nick Fury. They're included after the jump.]via Facebook, and Empire Online.Official synopsis:

Marvel Studios presents in association with Paramount Pictures “Marvel’s The Avengers”–the Super Hero team up of a lifetime, featuring iconic Marvel Super Heroes Iron Man, The Incredible Hulk, Thor, Captain America, Hawkeye and Black Widow. When an unexpected enemy emerges that threatens global safety and security, Nick Fury, Director of the international peacekeeping agency known as S.H.I.E.L.D., finds himself in need of a team to pull the world back from the brink of disaster. Spanning the globe, a daring recruitment effort begins. Starring Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson, Jeremy Renner and Samuel L. Jackson, and directed by Joss Whedon, “Marvel’s The Avengers” is based on the ever-popular Marvel comic book series “The Avengers,” first published in 1963 and a comics institution ever since. Prepare yourself for an exciting event movie, packed with action and spectacular special effects, when “Marvel’s The Avengers” assemble in summer 2012. In “Marvel’s The Avengers,” superheroes team up to pull the world back from the brink of disaster when an unexpected enemy threatens global security.