Hiroshi Yoshii is a graphic designer and 3D artist from Japan. He creates these gorgeous little characters using Luxology Modo. What is is especially cool is that some of his creations are turned into real-life plastic toys, which you can buy here: http://factron.net/index.html , although it seems like you need to be able to read Japanese for that site!
Here is a video showing Yoshii doing some polygon modelling in Modo:
Find out more about Yoshii at his personal sites:
Luxology interview with Yoshi: http://www.luxology.com/community/profiles/hiroshi_yoshii/