There are lots of level codes in the game. Just play through the levels and you'll eventually find a couple of them.
That requires a code from real life neopets merchandise.
see links below
You can't. These things dont exist - if they did exist they would be illegal.
You can't get it. It's and edit positioned to look like its an avatar. I would try searching "Fake Neopets Avatars" Copy the HTML code, and paste it on your userpage.
7511
It is 12345
speedbrick - armoured - ghostracer
That requires a code from real life neopets merchandise.
2366
The code is 56473.
A384j-228p1
5731
12999
56473
41012
85515
for lv 7 is 23248 The code for level 2 is 98473.