Hey hey heeeey! HEY!
We got the answers from Marytron about 3D animations!
Read the article there, it's super interesting and there were some awesome questions (and some not so awesome questions, please, stop asking us how can mirrors be real if our eyes aren't real, we don't know.)
Enjoy!
http://www.castlestory.net/en/news/6207-Marytron-Answers-3D-Animation