Nightmare Fuel / Mako Mermaids: An H₂O Adventure

• While bloodbending was only casually revealed in one episode of the parent series, there are a few characters in this one willing to use it.
  • When a moonspelled Zac runs out of patience with Lyla's attempts to get him back to his senses, he responds by telekinetically chucking her away from him.
• Nixie uses volume reduction on Sirena's vocal cords, causing her to scream loud enough to shatter all the glass in the café.
  • Ondina goes right for the throat when Zac refuses to listen to her and Mimmi, noticeably causing him pain. One can't blame him for responding in kind.
  • Erik does the worst, as he uses a Psychic Strangle on Cam when the latter rejects his offer of power. Only Carly's intervention saves him, and Erik's Death Glare indicates if she had done anything other than splash him, he would have done the same to her.
• The entire purpose of the Merman Chamber. It drains the opposing merperson race - mermaids - of their magic and powers. Which doesn't exactly sound as frightening as it seems, but draining the magic out of a mermaid is essentially equivalent to killing one.
  • To add to this, the trident stone. In the episode aptly titled 'The Trident Stone', after touching the stone for just a few seconds, Mimmi explains the feeling she received from it as 'all the life being sucked out of me".
  • Once Erik activates the Merman Chamber, Sirena, Ondina, Mimmi, and Rita immediately fall down the ground, groaning and seemingly in pain. This is the moment that Erik realizes the stone isn't strengthening their powers, it's killing them and Erik could essentially be considered a murderer.
    • It seems the chamber is so dangerous that the original creator kept it hidden from everyone, including his own descendants to avoid it being used to kill Mermaids. If that doesn't scare you, nothing will. The man who created it balked in terror at his creation.