Board Thread:New on Ben 10 Wiki/@comment-24579099-20140701182447/@comment-1458758-20141013175735

Well, he's clearly older than 10 year old ben, but clearly younger than 16 year old ben. So to split the difference, 13 would seem about right. Having said that, he's clearly a parody of people like Justin Beiber who gained fame in their youth and let it go to their head.