How would Ooo do in a Finn War?

Artwork by Jessart on Instagram: https://www.instagram.com/jegssart?igsh=Y3hwZzBhamF0Y3hn

For the sake of having everyone be at their peak in the series, this would take place a week before The Great Gum War. Gumbald tried to have a Finn army, but something went wrong and brought 16 alternate Finns who want to destroy all of Ooo.

Details about all the finns. Credit goes to a commenter on the Instagram post

  1. Flame Finn - A Finn who wasn't able to resist the Fire Elemental's ability to inflict violence, ultimately becoming the strongest of the Flame Warriors.
  2. Fern - a Universe where Fern won against Finn, and ultimately replacing him.
  3. Lich Finn, a finn where he loses as the first fight, and becomes the host of the Lich.
  4. Vampire Hunter Finn - from the Vampire ruled universe, Baby Finn grows up to become a Vampire Hunter.
  5. Alt Fiona - a Fiona that is actually canon, more ruthless than the original one.
  6. Radiated Finn - a Finn that was infected by the Goo-Monsters.
  7. Emperor Finn - a Finn that didn't leave the Island, and ruled it instead (I like the idea from one guy in the comment).
  8. Ruthless Finn - a Finn thirsty for battle, evident by him keeping both of his swords that he lost, and his scars.
  9. Nnif - Basically an evil Finn, with inverted colors.
  10. Pillow King Finn, a Finn that stayed in the destroyed Pillow-world, and ruled as its king.
  11. Alt Farmworld Finn - didn't use the crown, instead defeated the Destiny Gang, and became a Ruler.
  12. Mask Finn - a Finn that didn't leave the Island, but the island was overrun by the virus, so he needed to wear a mask to not become infected.
  13. Davey - a Finn that didn't stop pretending as Davey, ultimately changing his entire personality completely.
  14. Battle Train Finn - a Finn that didn't stop playing at the Battle Train, ultimately hardened and drove to insanity because of it.
  15. Shoko - a Shoko that didn't die, and became a Ruthless Warrior of Ooo.
  16. Winter Finn - the Finn from Winter King's world, a Finn more accustomed to the ice, and rebelling against the Tyrant once in a while.

With all this in mind, how well do you think the people of Ooo are handling this problem?