Board Thread:General Discussion/@comment-28958971-20160920144928

So, which is your favorite Ben 10 series?

For me, it has to be Ultimate Alien. While the original series had overall better episodes, UA introduced most of my favorite aliens (Water Hazard, AmpFibian, Fasttrack etc)

So, which do you guys prefer? OS, AF, UA or OV?

(RB does not count since it has not been released yet) 