he used walfas

Hm? Is that the name of the art software?

yes , you can go to walfas .org to see it ,actually you just go to the website (Walfas.org) and scroll down until you come to a large character which then you can click which takes you to the creating page , there will be a character on the screen , click on the character and go to change parts ,you can change any of the parts , but it is limited , for skin colour you can print screen and edit it on ms paint