If you thought a cheerful kids' show with creature adventures like Wild Kratts would be like a walk in the park, you'd be dead wrong, because between the villains, the dark side of nature, and sometimes even on-screen death, there's a reason why it started on PBS Kids GO! before it shut down. What Do You Mean, It's for Kids? indeed.
- The Zach-Bots, especially when they take the form of a human.
- Many of the cruel things Zach does to the animals he captures, such as brainwashing walruses so they are forced to stay underwater until they drown just so they can find a pearl he stole.
- He's also unafraid to threaten his rivals directly as seen when he hacked their suits and made them transform randomly, with at least two transformations being directly lethal (a fish on dry land and a butterfly underwater).
- And in "Let the Rhinos Roll" when he tries to bulldoze the barn hiding the Tortuga, with Aviva, Jimmy, Martin and Koki inside.
- He's also unafraid to threaten his rivals directly as seen when he hacked their suits and made them transform randomly, with at least two transformations being directly lethal (a fish on dry land and a butterfly underwater).
- Gourmand's teeth gnashing in "Stuck on Sharks". What made it even more creepy was he was talking to himself while he was doing it.
- Seven from "Octopus Wildkratticus", post suit-tangling.
- Donita Donata paralyzes animals to make living jewelry out of, and even did it to Martin (to use as a model), on whom she seems to have a crush. There can be consequences to this: At least in humans, when the body is paralyzed with the brain intact (which is different from medical paralysis or coma), the victim usually strokes out within 3 months.
- Gourmand talks to himself in an unjustifiable way, sings jingles about eating endangered animals to himself; heck, the whole thing about cooking and eating endangered animals is creepy enough. Not to mention the fact that he's perfectly willing to cook and eat the Kratts if he can get his hands on them; the incident in the wild turkey episode could be more justified by the fact that Martin was in turkey form when Gourmand went after him but there is no excuse for wanting to make "a side of Kratt" out of a miniaturized Chris in "Platypus Cafe".
- The orcas fatally tearing apart a giant squid and eating it in "This Orca Likes Sharks" deserves a mention.
- In "When Fish Fly", a miniaturized Koki gets lost at sea when the flying fish she's on gets startled by a dolphin. She manages to find a plant leaf to rest on, but the flying fish lays eggs on the plant, causing the leaf to sink. She tries to swim away but is stuck to the leaf, which pulls her under the water. Koki would've drowned if not for the Kratt brothers arriving in time.
- In "No-Name Dream", it all starts off like normal, with Martin having a dream of him meeting various baby animals he met and named, which does become surreal at times, but overall pretty normal...until he encounters four baby animals he did not name, that suddenly begin to talk in a deep voice, begging Martin to give them names over and over again as they cry and grow bigger, and eventually Martin starts to fall down, as if he was drowning... Overall quite a Surprisingly Creepy Moment after starting off surreal in a fun way, especially when the rest of the episode is rather lighthearted, making this scene stand out even more.
