'Avengers: Age of Ultron' Plot Spoilers: Ultron is a Peace-Loving, Intelligent Robot?

Ultron, the villain in the sequel to "Avengers" titled "Avengers: Age of Ultron," is a peace-loving and intelligent robot who wants to make earth a safe place to live. But Ultron becomes a threat when he begins to see human as the main hurdle in achieving his task, spoilers from the movie indicate.

"Avengers: Age of Ultron" will reunite Captain America, Thor, Black Widow, Hawk-eye, Nick Fury and Tony Stark, and also introduce Quicksilver and his twin sister, the Scarlett Witch.

Tony Stark created Ultron, a robot with artificial intelligence designed to assess threats and act accordingly, so that the avengers could take a much-needed break from saving the world. But because Ultron lacks the human emotion, it fails to understand the small mistakes and flaws in a person's behavior.

"I know you're good people. I know you mean well. But you just didn't think it through. There is only one path to peace... your extermination," Ultron says in the movie.

Shedding light on Ultron's character and thought process, director Joss Whedon explained to Entertainment Weekly that Ultron is not the quintessential villain, who is on a power drive.

"Ultron sees the big picture and he goes, 'Okay, we need radical change, which will be violent and appalling, in order to make everything better'; he's not just going 'Muhaha, soon I'll rule!' He's on a mission. He wants to save us," Whedon said.

Although he is a formidable enemy, Ultron, played by James Spader, is someone who is highly intelligent and articulate, and he could "blow your mind with his views," believes Chris Evans.

"A lot of times when Ultron starts talking, it's beautiful. It's really intelligent stuff," Evans, who plays Captain America, said of the character. "He's out to do the things he wants to do because he's disgusted with X, Y and Z. You could probably sit down with Ultron and have a really intelligent conversation."

The superheroes are sure to have their hands full with Ultron, as he is a program who can upload himself into The Cloud, and rebuild himself, thereby allowing him to take stronger physical forms. This capability makes it difficult to defeat Ultron, Movieweb noted.

The presence of Quicksilver and Scarlet Witch on his Team Ultron does not help matters either.

Quicksilver and Scarlet Witch, played by Aaron Taylor-Johnson and Elizabeth Olsen respectively, have abilities that will make it difficult for the Avengers to fight them. While Quicksilver is fast, Scarlet Witch can get inside people's minds and read them.

"With the [first] Avengers, everybody pretty much had the power of being able to punch somebody," Whedon explained to Entertainment Weekly. "And now we have a woman who can get inside your head and move objects, and a boy that can move faster than anything, and a robot [Ultron] who can self-replicate and is out of his mind. So all of sudden, it's a darker, weirder, tougher world that they're living in."

The movie will hit theatres in April 2015.