How old is Ben 10 in Ben 10 Alien Swarm?

Answer 1

in Ben 10 alien swam Ben is 15 because it is the the category of Ben 10 Alien Force and in Alien Force he is 15

Answer 2

It depends on which one you are talking about? In Ben 10 Secret of the Omnitrix Ben is 10, in Ben 10 Race Against Time Ben is 10, and in the new Ben 10 Alien Force movie that will be coming out in Fall 2009 Ben is 15.

Answer 3

Ben is ten years-old in Ben 10, and he is fifteen years-old in Ben 10 Alien Force.