In the theme of computer related mascots...Blender and Yafray!

For who don't know: they are a 3D modeling-animation-rendering program and a raytracing rendering module. They are open source projects downloadable and installable for many operating systems.
Blender.org - Yafray.org

The Blender character is skinny because the installation program is very light and fast.

--JK

EDIT 2014-06-05: .