Being a cartoon for kids, the Nightmare Fuel in Jake and the Never Land Pirates is diluted, but remember that this still is Peter Pan what we're talking about, so...
- Shiver Jack. He's an evil ice wizard that wants to freeze Never Land to turn it into his "playground", and will not stop in front of anything to get his goal. Oh, he also tries to straight KILL the main characters when they stand in his way by freezing them alive. Sweet dreams...
- Dread is, to put it lightly, a terrifying power-hungry psychopath who tortures his victims into giving him what he wants, and, with Shiver Jack, is the only villain who tries to directly murder Jake and his crew by throwing bombs at them in his second apparition.
- The Sea Witch, the main antagonist of the "Pirate Princess" arc, is also this. An evil, decaying, and sadistic sorceress, she turns people into golden statues just because she could and attempts to do this to the main characters after doing it to the titular princess once ago. Yes, you heard that right: She put a person, a teenager and nothing less, into an And I Must Scream state in a kids' show. She improves after her Heel–Face Turn in season 3, but still...
- Lord Fathom, the Big Bad of the Season 3 special, is utterly unsettling, to say the least. His grey, corpse-like skin, sharp teeth that would make Bruce from Jaws proud, use of black magic, Yellow Eyes of Sneakiness, and the fact that he turns the Never Sea's creatures into mindless zombies with Sickly Green Glow Eyes makes him totally out of place in Never Land.
- The Grim Bucaneer is also terrifying. He isn't a wizard, an evil magic user, or a clumsy Anti-Hero, but just a very skilled and devious man who's greedy for power, and will even do damage to Never Land itself to reach it.
- In one scene, he manages to snatch and then drag Izzy into the shadows, right in front of Jake (who he can only see as a sister). And the fact that he's helpless to do anything to save her is bone-chilling. Her screams, while he kidnaps her, are just as unsettling.
- Now just imagine that your kids and other people (but mostly your kids) are stuck in a dark, unsettling ship blocked in the middle of the sea. That's pretty much enough to get parents and other adults nightmares, but the thought that they are with a dangerous criminal that is dreaded in all of Never Land for his mercilessness that will or will not harm them is pure and utter terror. Humans Are the Real Monsters Indeed.
- EVERYTHING about the Strake. For one, it's a giant sea snake with three heads and Sickly Green Glow who utterly tries to eat Jake and co. after Lord Fathom released it. Then, it immediately goes after the main characters and is only stopped when Jake sends it back to its underwater prison, almost being devoured in the process.
- In The Grand Finale, Captain Hook of all people, in spite of his Villain Decay, gets one: he steals a magic Artifact of Doom, a stone, which has the power to turn others into stone. It also turns you slowly into a rock, and the more you use it, the faster the petrification gets. The creepy thing, however, is that Hook seems like he does not care about it, and goes mad after its power, petrifying Peter Pan and later being willing to murder Jake and the gang, cheerfully leaving them to die when they try to stop him, even gloating when he does it. And then, when Hook sees that they are still alive, he enters a Villainous Breakdown, claiming that he will shatter Peter so they will not foil him this time. He gets better after the stone is destroyed, but seeing a normally Laughably Evil character like Hook being so ruthless and omnicidal is quite jarring.
