I thought the film was awesome. Shocked not so many did, but still doesn't steal my enjoyment of it. One of my favorites now.
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I found the film to be pretty lame, trying to root for the offspring who don't even exist in the real Marvel universe, who ultimately prove not to be that interesting opposite mainstays such as Iron Man & the Hulk. And poor Thor was turned into a slacker deadbeat dad who basically dropped his daughter into the lap of his old pal Iron Man & walked out on her, he didn't even try to raise her or teach her the stuff he said Iron Man was supposed to teach her. Odin would not have approved. And don't get me started on Thor basically abandoning Earth/Midgard to Ultron.

I don't think I would have had a problem with Hulk being a little less powerful in this movie, maybe leading to alinger fight. That one moment at the end when Hulk really takes Ultron down but their backs are to the camera, and you don't see what he does, was a little annoying. It feels as though Torunn risking her life to toss Ultron into space was supposed to be the real finale to the battle.
Still got my fingers crossed, waiting for Judas Contract to get green-lit

I liked this movie a lot, but I felt the ending was kind of anti-climactic. In most films like this, it goes "Our individual powers aren't enough to take down this nefarious villain, but through the power of TEAMWORK, we can accomplish anything!"
or
"This teamwork thing is working, but we need a different and more organized plan to take down this nefarious villain!"
The kids in the movie pretty much decided "Screw this, let the Hulk kill Ultron." The Hulk, who's been absent the entire film, suddenly shows up in the last 10 minutes like freakin' Goku and does most of the work himself.
That said, I felt the characters were great as well as the dialogue, and except for the end, the teamwork aspect got a lot of good focus. My favorite characters were definitely Pym and Azari, for various reasons.

I haven't really liked any of the other direct-to-DVD Marvel animated films, but this one was surprisingly awesome. The premise made me think this would be a big stinker, but the creators really hit this one out of the park. Really great.

I agree as well. Even though I won't front. The Hulk made this movie.