sgarecfinders | Vengeful John? Protective John? (Reply)

I'm not quite sure where this would fit... I want SuperProtectiveVengeful!John, not just regular Protective!John.

There are many wonderful stores that feature a protective John getting furious over someone who's slighted Rodney in the past.... past lovers who abused him, his piano teacher, Sam getting him banished to Siberia; etc etc.

What I'm looking for - and I have no idea if they even exist - are stories where John actually *does* something about it. One of Rodney's old nemeses shows up and John -uh- takes care of things, or they end up on Earth and oh look, I can make life hell for the shit head that abused Rodney....

I know there are a couple where Rodney takes care of John ("Disappointing Yoda" comes to mind, there are many others, but I have antihistamine brain fog at the moment) but I can't think of a single example of the other way round.

Nature of the beast means likely McShep - but any paring where Rodney is avenged would be cool. (slash preferred, but not essential)

Thanks.

Update, and a bit more information:

Kaelie offered two lovely stories (I thank you)- and while sort of what I'm looking for not quite. I'm thinking more of people who've hurt Rodney in the past - think "Ryan" the abusive SOB from Boilerbmw's "Finding Rodney", or any of the both canon and non canon piano teachers - or even Jeanie a la Sardonicsmiley's How the Millers Relaxed and Learned to Love Rodney (another excellent story).
I love vicious John and Protective John (add Solder!John and I'm so there.... Keira Marcos is my hero )

Thanks again.