American artist Jeff Thomas started drawing Pon and Zi in 2004 while still in Highschool. When he fell in love his comic book characters went through a visible change: they got names colours and personality. Yellow Pon is an optimist, blue Zi is rather – well, blue. What according to Jeff originated in "doodles on notes, never to be taken more seriously than a side project" has turned into a rather large online comic portfolio that has found many fans and is now on its way of becoming a book, too. Jeff Thomas has launched a funding project to produce the book and in the process has created Pon&Zi t-shirts and some cool designer toys. You can support him on kickstarter.
Source: More supersweet stuff at ponandzi.com (http://www.ponandzi.com/Pon_and_Zi/The_Pon%26Zi_Collection.html#grid)