New Avengers trailer: 'I created something terrible'

The third full-length trailer for Avengers: Age Of Ultron has been released.

In the explosive new two-minute clip, the ensemble of superheroes are seen battling against artificial intelligence in the shape of Ultron, a self-aware and self-teaching robot created by Tony Stark.

Turning on its creator and the rest of the world, it's not long before Ultron unleashes terror on the planet, forcing the likes of Iron Man, Thor, Black Widow and The Hulk to face their toughest challenge yet.

"I created something terrible" Robert Downey Jr's Tony, amid scenes of destruction from the giant mechanical enemy.

"You amazingly failed," agrees Black Widow - played once again by Scarlett Johansson.

There's in-fighting too with Thor throttling Tony Stark and Tony's Iron Man later battling The Hulk.

But it's not all death and destruction, as there also appears to be a romance blossoming between Black Widow and Bruce Banner.

The pair - played by Johansson, and Mark Ruffalo - are seeing getting very cosy together in one shot.

This is the third full-length trailer of the movie, which hits theaters on April 23.

It is expected to be one of the summer's biggest blockbusters, with the last movie making well over a billion dollars at the global box office.

It looks as though Johansson's Black Widow will be having more fun that usual as she jokes about "cleaning up after the boys".

In one scene she is seen picking up Captain America's famous shield, as she speed around on a motorbike.

* Avengers: Age Of Ultron shows in New Zealand cinemas April 23.

- Daily Mail