The eye-bots within range of the EMP are destroyed. The Visionary sees the glowing gauntlet heading for his face, but his gun is at the hero's chest. Point blank shot.
"HASTA LA FRICKEN VISTA-" the kid shouts.
The gun fired, sending a needle-like dart into the kid. It wasn't a fatal wound by far, but the kid would suffer once the chemical in the dart set in. That's all the Visionary could think before the fist crushed his nose and broke one of his bionic eyes, sending him flying into one of his Watchkeeper's trucks. He was almost instantly knocked out as two Watchkeepers hoisted him up and placed him in the backseat. But before he passed out, he began laughing, pulling out a button and pressing it. All the disabled eye-bots in a 500-foot radius would detonate. The kid would live- explosions seem to have as much effect on him as a light breeze- but it would get them enough time to get away, and by the time he's done dealing with that and the collapsing museum with people inside, he'll be in too much pain.
Sight is a very important thing- it shows is all the world's wonders, its dangers, but it's all coming from a portion of the brain using images taken by the jelly cameras known as eyes. The thing about brain signals is- they can be scrambled. Or enhanced. That is Where the chemical dart comes in. The kid's going to see a whole lot of nothing- then a whole lot of everything. Sensory overload. Dilated pupils times one thousand. Even closing his eyes will do nothing. He will see every particle- every vein in his eyelid, every ray, in HD. And in a moderately sunny day like this, that's going to be blinding. There's no cure, though it only lasts maybe fifteen minutes tops. But those fifteen minutes will be in agony. Agony enough for The Visionary to feel, as he falls into unconsciousness, face broken, left bionic eye smashed, that he accomplished something.