Oh, you didn't know about it? Oh, well, it is
a well-kept secret. In Yellow version, if you find the secret hidden surf area in Lavender town, and use a moonstone on a level 100 Arbok, you get Arboking! It was only recently discovered.
OKAY, BULLSHIT ASIDE. It's going around on tumblr and DA that you go here
, hit randomize, and find a combination you like and draw it. *DarkJak
just did it, and I thought I might give it a whirl.
Normally the point is to be hilarious, but this
was actually the very first thing I got, and I thought "WOW, THE SPRITE LOOKS REALLY SILLY BUT THIS IS AWESOME AND HAS TO HAPPEN.