BEFORE anyone exclaims, "M.I.B. will kill Mario!" or anything of the sort let me clarify by stating that by "Plumbers" what I mean are those secret alien contact & invasion prevention Agency that is spoken of in the "Ben 10" universe. So who do you think is better at inter-planetary relations & saving the Earth from hostile Alien invaders? The Men in Black? Or The Plumbers? My vote goes for The Men in Black despite The Plumbers having Ben as their ultimate weapon simply because of the M.I.B.'s "mind reprogramming" tool which let's them make civilians forget any & all Alien related encounter/s they might have had. In Ben 10, whenever civilians get caught in one of Ben's Alien related battles the civilians are not briefed (or debriefed) about what they saw & what just happened. In M.I.B. there is always a clean up crew to manage the crowd & keep everything below Radar whilst in Ben 10, not only is the crowd left to witness everything but any & all alien related incident gets media attention.