Well, for the Pepsi guy, he's some ice and fire powers (it's called a quirk I believe?), being able to use his ice powers as propulsion and defense while his flame powers are used mostly for offense, he has great eyesight, reaction times, and atharmlessly.ities, I'd estimate that his powers can reach a range of about 1km at best, to attack the heli, he would most likely detect the helicopter visually, move towards it rapidly using the ice, then somehow get close to the helicopter's altitude and fire away his flames or ice, if the helicopter finds him first and fires say it's 9K121 Vikhr laser guided anti tank missile, there is a chance that the missile would hit the guy if he's looking the other way, but if he's looking just at the right place however, he might just be able to see the missile just as it was coming at him and then he'll deploy an ice wall of sorts and pretty much detonate the ATGM before it could hit him, now he knows the general direction of the heli and moves towards it, if the heli fires either it's 80mm S-8 rockets or the 122mm S-13s, then there's actually a good chance that the helicopter would get the guy through shrapnel damage or even a direct hit, because those rockets are fired in a salvo meaning that there's like 30 or so rockets fired at once, breaking his defenses easily or at least severely damaging it, however the caveat here is inaccuracy, the rockets are unguided and that's why it's fired in salvos, and it's explosions only cover a certain area, meaning that if the guy sees the rockets coming at him, he doesn't even need to deploy ice walls, he can just use his ice powers to get away from where the rockets gonna land, then the rockets would detonate harmlessly.
