So I realize this game is, what, 2 years old?   But I just now got it and got into it.   

 I’m in Megaton last night and I get into the weapon armory.   Right after that I get attacked by pretty much the entire town.   I try to run into my house and hide from them, and the villagers follow me in.   When Wadsworth tries to fight them off, they end up killing him.   Unfortunately I don’t have a previous save to go back to (been just using the autosave).   Question is, is there any way to either get Wadsworth back or even get another robot butler?   I kinda miss his jokes and free water. 

 Before I turned it off I got a mission to go to a robotics factory and insert a keycode that will supposedly give me control over the robots there.   Might there be another butler there I can bring back home with me?

Thanks!

I know you can get a robot in Tenpenny Towers, but you have to blow up Megaton. I don't think you can get that specific one back though, unless you're playing on PC and use the console commands.

Your stuck im afraid, if your on PC its fairly easy to bring him back with console commands though. 

Here's a tip, rotate saves, I usually save my game over 5 saves, and when I save the game, I just save over the oldest save.

Also, DON'T use the auto save, it's been known to corrupt game saves, just save manually.