I have recently started doing some quick speed sculpting in ZBrush to develop a more cartoony and simplistic style. My first victim is Aang (aged somewhere between The Last Airbender and Legend of Korra) which took around 5-6 hours. I plan on making a bunch more in the next few months, so if anyone's got some suggestions for future characters (or just critique in general), feel free to comment :-)
I have also made a short written tutorial on the rendering & compositing process (as I got quite a few questions about the model) for anyone who might be interested.
Artstation - https://www.artstation.com/artist/daneder
Cheers!