While I do agree that Empoleon does carry the niche of being a bulky Defog + Stealth Rock user, I don't think that niche is enough for it to justify use. Empoleon outside of that is just bad. Between a lack of recovery and lost resistances to Ghost and Dark, I honestly think it has a hard time making a splash (hurrr) in the metagame. What kind of threats would it even be able to check or counter right now? Not very much in my opinion. It's weaknesses to common Ground, Fighting, and Electric attacks really don't help it either. From a defensive standpoint, it's just outclassed by the likes of Rotom-W and Suicune as bulky Waters, even though they don't carry SR/Defog. Offensively speaking, I wouldn't use it over Keldeo and Manaphy.
So, I mean, I get that Empoleon can do something that most others can't, but I don't think it's worth it. I would rather use a separate SR setter and Defog user or even just Defog/SR Skarmory. With that said, I think I'm going to reject this too on the basis of viability. Your skeleton is nicely presented, though, so good job with that.
QC REJECTED 3/3