Edit: Added cover descriptions.
I would get excited about the prospect, between having another villain and the fact that Ultron is cool. But 4* means that it’ll be a coon’s age before I can get him into fighting shape. The usual lament.
looks pretty good paired with falcon or hood with another good blue. Would love to see him in game and how his red scales with levels 
/Demiurge give everybody an Ultron Prime cover because there are no strings on him
Honestly, he’s probably more similar to Gorgon. We have stats and everything for him but he has yet to be released yet, or if ever. I have a feeling Ultron won’t be released because he is ridiculous with his powers lol. Imagine him with Laken, or PX or even worse, IF and Luke Cage. Any tile team instantly becomes insane. So if he is released, I think it will be after some tweaking.
If he was collectible as a 4*, I would totally pass on him. His power’s are pretty awful. Hive Mind relies on his Sentries to be good, and that group AoE on red is just awful. Even at 7 AP.
While his red is awful, that Hive Mind can be abused so much, imagine a new IF and Luke Cage attack tile every turn. Or a PX buffed tile, which is then copied, only to be buffed again that turn. He is by no mean a slouch, he is just too dependent on a special tile generator.
it sounds like what you’re saying is there ARE strings on him.
Obviously false, as he (it?) has himself stated that the aforementioned strings are completely absent.
What if the strings are making him say the stuff about the strings? That seems like the type of thing that strings would say.
What if… the strings are the REAL Ultron??? (someone get the Keanu meme!)
I doubt that he’ll be released as playable. More than likely he’s another Gorgon type character.