Watch Ben 10 Ultimate Alien Duped Stream Online. As his Identity now revealed to the world, Ben also becomes Ultimate Spidermonkey. With the new season, also new challenges awaits Ben 10 and The Gang. The latest episode is the Ben 10 Ultimate Alien Duped. In this episode, Ben comes up with a plan to be in more than one place at once. He becomes three Echo Echo's and changes back to human form, inadvertently creating three duplicates of himself each with their own separate personality of the original Ben. Now its up to Gwen, Kevin and Julie to figure out who is the original Ben. Watch Ben 10 Ultimate Alien Duped Stream Online.