Unfortunately, militaries around the world got the same idea before you guys, there already exists EMP-proof missile sites in Alaska and development for EMP-proof vehicles (in air, land and sea) started years ago.
I'm i the only one who think if any of these thing happen, humanity is fvcked? i mean seriously, we can't even stop infighting or pull our wits together to save fellow nations, conclusion; united we stand, divided we fall, and even zombies are united when looking for some good human flesh
Hell no. Think about it: If they're advanced enough to invade our planet–meaning that they are a spacefaring species–then they are most likely advanced enough to rape us until we bleed.
Zombie apocalypse?
Hopefully, Ebola becomes this. I just started watching The Walking Dead, and I like the unity, intensity and overall badassness of a zombie apocalyptic world.
Robot Uprising?
No, as humans would be analized very quickly if robots ever became sentient.
Alien invasion, and it's the most likely one to happen too, since robots are still next to impossible for people to grasp the concept of, let alone create true artificial intelligence that could even consider us humans worth ruling.
In a fantasy scenario tho, robots, since they would be easy to incapacitate.