Alessa
The ones that deserved it? Made multiple attempts to set loose Things that would destroy existence as we know it. These people went beyond anyone and anything I've ever seen before. Things far more powerful than anything I have ever seen. Even more powerful than what Walter nearly created. They kidnapped a pregnant woman and, moments after the baby was born, tried to rip its soul away and stuff their hideous extradimensional Thing into its body, so that it could incubate and be reborn in the physical world. If it had happened, this entire universe, probably multiple universes, would've been annihilated.
I saw it all happen. I lived it. And in that future, I stopped it the only way I could. It destroyed them, and it wasn't hard to find out where all their churches and safe houses were in the United States.
When I came back to myself? I made sure it would never happen. I did what had to be done. Not one single cultist survived in the states, and those in the rest of the world got the message. Haven't heard a peep since.
The two that didn't...
The two that didn't were accidents that will haunt me for eternity.