I thought of this a few days ago, my username. So, you maybe asking "what does the 'hk' stand for?" Well, I thought of an answer. So, at Camp Half Blood, I'm a child of Hephaestus. So, the H is for Hephaestus, and the K is for kid. So it now means HephaestusKid56217. I'm still figuring out what the numbers should stand for. But yeah! That's it.