I used to go by the name of a character I drew up as a kid which later turned out to resemble a pokemon to a horrifying extent. I then began to resent this character and dropped that name.
After lurking on Pyoko, which Saturn noisily brought to my attention (not intentionally, but when he lols...) I later joined him at a Pyokon, well, part of it anyway. There I didn't have a internet name to go by and some one, I forget who, tentatively gave me the title of Kong.
Later on #finalfight I became Catloaf. Partially based on my cat at the time who had a way of sitting particularly loaf-shaped, partially on vaguely remembering a picture of a loaf of bread with a cat face (I think it was titled nekopan) and partially because I memories of geese sitting being called goose-loafs by my father, so that made me already think of my cat as a Cat-loaf.
The said cat has since passed away. He was 17 years old, as was I at the time.
Because of that cat's habits, to this day, I still sleep better with a weight of some sort pressing down on me. The one thing I don't miss about him though, was his habit of drooling on me, usually my face, while sleeping atop me.