Mackeeper Ads and Pop-ups (How Do I Remove Mackeeper?)

I have never installed Mackeeper. It just randomly showed up.

When I google something, ads come up (even though I have adblock) and pop-ups about Mackeeper comes up (even though I have pop-ups blocked). Also, whenever I try to watch a video on Youtube, the white space where ads are supposed to be gets bigger (which I am positive is because of Mackeeper).

What the ads look like:

What happens when I try to watch a video on Youtube (the white space gets bigger):

It's making me really frustrated. I've looked through many discussions about this and I've tried different solutions but none of them work. I've looked through all of my files and cookies and everything and I've deleted everything that had Zeobit and Mackeeper but that hasn't worked. I've tried GlimmerBlocker and Appcleaner but those haven't worked either. I'm not sure if Mackeeper is some sort of virus or just some marketing thing to **** me off. I just want it removed completely from my computer. My main browser is Google Chrome but Safari was also affected by this.