One of the organizers, mismith227 has created a css version of Wapuu. It’s not an image but drawn with HTML and CSS.
His work is on Github ( https://github.com/mismith0227/csswapuu ) and he is waiting for your forks and pull requests. Try drawing your own local one!
Wapuu is the mascot character of WordPress and you can read more about him at Wapuu’s Q&A page. He was created by a Japanese creator Kazuko Kaneuchi, is distributed under GPL and has been forked as local versions in Japan and in the World. Read this article about “Punk Wapuu”, too 🙂