"Ben 10" has a lot of aliens, but not every one can be a winner. For this list, we’ll be looking at the transformations from the iconic cartoon franchise that were either completely useless, had the worst character designs, took up screentime with their terrible powers, or were just outright annoying. Our countdown includes Nanomech, Molestache, Juryrigg, Gutrot, and more! Which of Ben’s worst aliens would you remove from your omnitrix? Let us know in the comments.

Watch more great "Ben 10" videos here:
Top 10 Best Ben 10 Episodes:    • Top 10 Must-See Ben 10 Episodes  
Top 20 Most Powerful Ben 10 Aliens:    • Top 20 Most Powerful Ben 10 Aliens  
Top 10 Ben 10 Villains:    • Top 10 Ben 10 Villains  

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