I've been curious about Finn's Noble Brave skill for a while.
Noble Brave (勇猛勇心): Noble Brave provides high resistance against mental attacks.
There are several things this could help protect against:
Curses - Dix's Phobetor Daedalus or Seale's Har Resheph
Monsters - Mermaid's charm
Gods - Ishtar's and Freya's charms
Would this skill actually be resistant to things like a god's charm? If so, then it's clear that Bell is not the first to ever have a resistance to such things. Finn probably wouldn't have been the first either.