Description from original post (created 2013-04-07 16:02):
I would always play Bubble Bobble at the arcade when I was younger. This is the reference picture I used: 
(I might make the blue one later)
This is for the Sooaci dragon skin contest http://www.planetminecraft.com/forums/dragon-skin-contest-t237535.html
There are online versions of the game, but they aren't close to as good as the arcade version.