Cancelled! This series is cancelled due to ET leaving. Don't do anything to it because he will be keeping an eye on it. To continue reading the series go here.
ET HAS LANDED! This item belongs to the user Evolved To'kustar
Ben 10: Master Weaponry is the series after Ben 10: Ultimate Alien. The series planned for after it was going to be called Ben 10: Evolutionary Return but the idea is currently scrapped. Go here for more information on the sequel series.