Graffiti is not all about alphabet or letters. There are some people who can make more than it, it is Graffiti Cartoon. It will make your graffiti more alive. There are many things that you can make into cartoon. You just need to draw it with some graffiti touch. Then, it would be Graffiti Cartoon.
There are many characters that you can make into Graffiti Cartoon. Maybe, you want to have some animals to be cartoon. Or maybe, there are some figures that you think you can make it into cartoon with some graffiti touch. That would be very interesting. Therefore, graffiti must be regarded as an art.