My username is pretty simple. I was twelve years old. I liked robots. I liked Pokemon. And so when choosing the username for my first yahoo account, I naturally combined them together.
It was actually originally PikaBot_5000 but then at some point in the intervening years I realized how lame the number is and dropped it. I've made a couple attempts to pull away fromt he username, but in the end I always wind up using it again.
And as for the people whose names I would like explanations for: