While this show definitely seems more Kid Friendlier compared to its predecessors, it's not safe from these moments.
- Ben screaming in pain as Vil drains the poor boy of his Gax form.
- Didn't think the Null Void could get any scarier? Now it's a completely monochrome dimension where time appears to be permanently frozen, where you are stuck drifting in silence and solitude forever. It's enough to make one miss all the monsters the original one had! “Thankfully,” Ben 10 vs. The Universe: The Movie shows the place once again as a prison dimension.
- The Antitrix's version of Gray Matter, Dark Matter: it looks less like a Galvan and more like a tall, lean (if not straight up malnourished) demon, able to contort his limbs in an innatural way. The fact it's a massive case of Adaptational Badass doesn't help.
- Ben's nightmares in "Innervasion Part 2", caused by the High Override's influence. Especially the one where a bunch of Shock Rocks crawl out of a crater, one with Ben's face telling him he can't fight fate and one where he, as Shock Rock, crushes Gwen in his hand.
- Even worse is Ben getting in contact with the High Override at multiple times during the 5-parter. Fred Tatasciore does a good job of voicing the Override; not to mention, the size of the Override! He’s about as tall as Way Big. Plus, he mind controls Ben into becoming one of his thousands of soldiers.
- While the event ends on a happy note, there’s still something left unaddressed; what happened with all the other Fulmini that got out of the watch?
- The Forever Knight. The Forever Knight is the cunning and manipulative antagonist of Season 3, usually hiding in the shadows while either Kevin or another villain does his dirty work. At this time, Ben has only fought him once, but the Forever Knight managed to play into Ben’s insecurities. It’s rather shocking coming from this show, seeing as it was playing it safe with the first two seasons.
- He only ends up getting worse as the season progressed, ultimately proving to be a full-fledged Slade Expy, with all that this entails.
- The sounds of Kevin’s transformations. You can hear what appears to be screams and other wonderful horror noises.
- "Which Watch": Charmcaster mutates Kevin into a horrible monster, and her words echo a certain someone she was associated with...
- In "Safari So Bad", Ben has his body taken over by a voodoo doll. Sounds like a Charmcaster or Hex plot, right? Wrong. His body is taken over by Tim Buktu, a grown man with no powers, who is obsessed with Ben after he managed to expose him for the fraud he was. The opening scene of the episode shows Tim obsessing over his defeat in a bathroom plastered with dozens of pictures of Ben's aliens.
- Tetrax gets his arm torn off in "Mutiny for the Bounty". He doesn't grow it back.
- Animo's Body Horror in "Animorphosis" can be more than a little unsettling; bonus points for the part where Stink Fly's wings are being consumed by Heat Blast's fire, and the doctor is apparently screaming in pain.
- In "Welcome to Zombozo-Zone", Max (who has been hypnotized to believe he was a wild man) decides to eat Gwen.
- Later, when they are both free from the hypnosis, they are captured by a mind controlled Ben, who decides to feed them a group of feral badgers. At least one almost bites off Gwen's face.
- It is made clear that the Alien X featured in Alien X-Tinction killed at least a few Ben Tennysons, and possibly their Gwens and Maxes. The Ben in the cold opening was at least able to live, but the Ben from Maximillian's universe was not so lucky. Keep in mind that all of these Bens were minors as young as 10.
- When Alien X is revealed to be an alternate version of Ben who is more jaded and cynical, believing he could do everything on his own. His origin tells that while fighting his universe's Vilgax, Grandpa and Gwen tried to help him, which resulted in Vilgax killing them with his laser eyes, we can see Ben watched in horror and this apparently has pushed him into who he was today.
