Imagine an anime character with parasitic bugs that have been living in his body since birth, feeding off of his life essence and helping him attack his enemies. You've just imagined Shino Aburame from Naruto, an awesome guy with incredibly creepy powers. He's not the only one - there are actually lots of anime characters with supremely unsettling abilities in shows like One Piece, Parasyte, Fate, and more.
Vote up the anime moves that you found the most disturbing, and vote down the ones that you're more or less indifferent to.
Healing abilities aren't creepy...right? Wrong, because Neferpitou's Doctor Blythe is one of the most unsettling things in Hunter x Hunter. This ability allows them to summon a gigantic, unsettling doll that's clearly based on actual Blythe Dolls. The doll contains a wide range of surgical implements that Neferpitou can use to do everything from first aid to major surgeries. They can even use the doll to reconstruct a ruined corpse in order to manipulate it later.
The protagonist of Parasyte, Shinichi Izumi, has a parasite living in his right hand, who he names Migi. Migi dramatically increases his speed, strength, and endurance by slowly combining their cells. What's more, Migi allows him to sprout blades from his hands that help him fight.
But Shinichi and Migi's partnership isn't the creepiest thing in the world of Parasyte. Those whose brains are taken over by parasites have heads that split open and transform into blades, and they happily chow down on human flesh to stay alive.
Moonfish is an escaped Death Row inmate who was a member of the League of Villains' Vanguard Action Squad. Presumably arrested for acts of cannibalism, Moonfish is singularly obsessed with human flesh.
His quirk, Blade-Tooth, helped him to pursue his gruesome goals. Blade-Tooth allows him to manipulate the size of his teeth and use them as a weapon.
Considering how creepy Mayuri Kurotsuchi himself is, it's not surprising that his bankai follows suit. Konjiki Ashisogi Jizō is a gigantic, golden baby with alien eyes that spews nearly inescapable poison made from Mayuri's blood onto anyone unlucky enough to be in its path. It's also outfitted with retractable blades, and can self-destruct as a last resort.