I would like to know what is used to create codecombat avatars I am very curious to know 
What do you mean by avatars?
Anya, Therin, Ogre’s, Witches’, etc’s little sprite images that run around on screen??
I believe the same program(s) is(are) used for all of the thang images . . . I just don’t know what it is (they are), I think I’ve asked this question before but haven’t gotten an answer nor was I pointed to where an answer exists. Hopefully, you will have more success.
I think he means the avatar’s that are created when someone contributes a significant amount.
And @Magicfloatincow these are made by the codecombat artist who is incognito ninja