My name is a mashup of 2 nicknames......my real name is something people have difficulty remembering, so some of the boys at work took to calling me Godzilla instead, because I worked in a school in Tech Support, I had a sign up with the Godzilla pouring ketchup on a human he was about to eat....the caption was, "Do not stuff with the Godzilla, for you are crunchy and good with ketchup."
It was a bit of humor directed at the kids who came up with all sorts of crap reasons as to why they had defaced their laptop or something else.
My partner calls me Bubbles, or Bubblicious, and since we used to work together, the boys overheard it, and took to calling me Bubzilla.
As for my avatar, right now it is the chameleon from Tangled, I like how he is cute, small, chubby, able to change colors, and ready for a smack down if necessary, which is totally me.
I sometimes change it to Wiley or some other picture which depicts how I feel....."Wiley is usually holding a sign which has been edited to say Oh Crap or Oh F!ck."