Board Thread:The Heroes of Olympus/@comment-31636400-20170413000454/@comment-32159399-20170612005936

No, Piper will not be unstoppable even if she used her powers to their full capability. That is because some can naturally resist charmspeak and others who already can charmspeak can also resist the power. Nobody in the entire Riordan universe actually will be unstoppable even if they used their powers to the fullest because they all have a fatal flaw and there is always a way to counter their powers. A person who can use another's fatal flaw against them will be extremely likely to win against the other person.

I think Annabeth already knows how to use her powers but she still doesn't use them to their full capability.

I think the most potent person will actually be Hazel or Piper. If Hazel can manipulate the Mist the right way, she will be able to beat almost everyone except maybe those who aren't affected by the Mist or those who can possibly her fatal flaw against her. Same thing with Piper. If she can actually get her charmspeak to a very powerful level, she is likely to prevail against most people. Of course, there are some holdbacks to charmspeak and some people can resist it but she will still be very powerful.

I feel that if everyone learns to use their powers correctly, and they know how their opponents use their powers, it is highly likely that they will be able to prevail against their opponents even if the opponent's sheer power is stronger than their's.