That being said, people on WRA... really need to read this guide. Specifically, this metagaming Death Knight. He would really benefit by this amazing guide. Assuming he's capable of learning anything...
Example of a Metagame-Sue, something that is not ICly a Sue, but has been done to death. DK guards? Unlikely but they are EVERYWHERE:
"zarren stop arguing with [insert warlock's name here] he can have his demon out if it wants"
"...how do you know my name? And his name?"
"i have the papers for stormwind citizens"
"I highly doubt they would give a death knight a list of Stormwind citizens, much less that I would be on it anyways. I'm from Duskwood, moron."
"i have the duskwood papers too"
"Then what's my surname?"
"it wasn't on the papers"
"Yes it was. Go look again, and don't come back until you know it."
"i am a general of the stormwind military i can do whatever i want"
"...you're a death knight, an undead monstrosity that murdered hundreds of innocent people. You are most certainly NOT in charge of ANYBODY. Now leave me the hell alone."