because he is so cool!
Pikachu is much more famous than Ben 10
Eric Carman because ben 10 sucks
according to the internet: Ben 10: 2,250,000,000 results Dumbuldore: 15,400,000 results but that's the net not the real world so it could possibly be more people know Dumbldore but not everybody knows Harry Potter so probably more people know Ben 10 anyway.
Ben 10 because most kids watch it than Elmo's world
Gollum
R2d2
it's hero time!
according to the internet, Ben 10 is. BEN 10: 2,250,000,000 results LADY GAGA: 601,000,000 results. but that's just the internet. i bet if you asked people all around the globe, they would say they know Lady GaGa more then Ben 10 though it's more famous on the web.
Brad Pitt for sure
No, Ben 10 is just a cartoon so there are all fake Omnitrixes.
sonic the hedgehog is more famous
sort of ...cartoonnetwork.com is so far the onley website with ben 10 games and the newest is a ben 10 alian force game and I can't rember what the newest ben 10 game is.