Character Analysis
Though it sounds like a cheesy brand of sports sedan, "Vision" is actually the exact right name for this character. He's what no less than three other characters have been dreaming of:
Ultron: Vision's vibranium core and organic covering is what Ultron is hoping to hop into as the next upgrade in his evolution. Unfortunately for him, the Avengers snatch the new model away from him when they tussle in Seoul.
Thor: Thor sees the Vision, and learns of the Mind Gem that's located right between the android's eyes, after he takes a dip in The Water of Sight. As a result, he's able to explain how helpful Vision will be in fighting Ultron. This helps settle Captain America's hash and calms the team's general anxiety about Vision becoming Ultron 2.0.
Tony Stark: Really, it's Tony's idea to upload J.A.R.V.I.S. into Vision, much like he was trying to do in uploading Ultron into the Iron Legion. The second time goes significantly better than the first, lucky for all of us.
Even though all these characters have their ideas and hopes for Vision, it's clear that he's his own man:
Vision: I'm not Ultron. I'm not J.A.R.V.I.S. I am…I am.
He's also a super-important member of the team. In the battle on the floating island of Sokovia, Vision helps to put Ultron out of commission with a powerful beam from his Mind Gem. He then saves Wanda Maximoff, just before the whole place explodes. When he takes his place in the new lineup of Avengers at the end of the film, we see that the team's going to be in good shape. (See what we did there? "See"? Vision? And then see what we did there, with "see what we did there"? It's working on so many levels, folks.)