Gollum is the sneaky scumball of "The Lord of the Rings". He wants what others have and blames them for his misfortune. See the 2nd of the "Rings" trilogy, "The Two Towers", in theaters now. It is excellent.
"Richard Cranium" is better understood when one puts together the short nicknames of the two words. When you figure it out you'll chuckle.
Call him Gollum or RC, whatever, but the neme AzMike is history (unless he starts acting like a real grown up).