A group of Young Adult heroes/characters from different franchises are transported to Middle Earth and eventually join the Fellowship of the Ring, shortly after it departs Rivendell.

How does their presence (as well as their individual skills, abilities, and overall experience) improve or hinder the odds of success of the quest undertaken by Frodo and Company?

Take into account some of these characters have previous knowledge of the happenings in Middle Earth, having read the books, or seen the films, or both. Whilst others have never heard of Arda, Middle Earth, the War or the Ring, or Tolkien in their lives.

These are the heroes translocated to Arda against their wish:

• Mercy Thompson
  • https://aspen-creek.fandom.com/wiki/Mercy_Thompson
• Will Stanton
  • https://darkisrising.fandom.com/wiki/The_Dark_is_Rising
• Timothy Hunter
  • https://dc.fandom.com/wiki/Timothy_Hunter_(New_Earth)
• Harry Potter
  • https://harrypotter.fandom.com/wiki/Harry_Potter
• Tiffany Aching
  • https://discworld.fandom.com/wiki/Tiffany_Aching
• Nac Mac Feegles
  • https://discworld.fandom.com/wiki/Nac_Mac_Feegle
• Percy Jackson:
  • https://riordan.fandom.com/wiki/Percy_Jackson
• Magnus Chase:
  • https://riordan.fandom.com/wiki/Magnus_Chase
• Carter Kane:
  • https://riordan.fandom.com/wiki/Carter_Kane
• Katniss Everdeen
  • https://thehungergames.fandom.com/wiki/Katniss_Everdeen?mobile-app=false
• Emmet Cullen
  • https://twilightsaga.fandom.com/wiki/Emmett_Cullen
• Rosalie Hale
  • https://twilightsaga.fandom.com/wiki/Rosalie_Hale
• Clary Fairchild
  • https://shadowhunters.fandom.com/wiki/Clary_Fairchild