Tidus, Link and Kaos do not even make it to the fight with Bowser and heres why:
None of them have the jumping capabilities to navigate the castle.
The heat from the lava rooms would easily overwhelm Link and Tidus as we have seen that stronger iterations of Link cannot handle that heat without the red tunic. I have no reason to believe that Tidus, who is wearing even less than Link would be able to tolerate it.
Ill give Tails and Frog a pass, as I suspect Tails may just be able to fly straight to the throne room and Frog being able to make the jumps needed to access the throne room and use water magic the heat is unlikely to affect him much.
For the actual fight; Bowser vs. Tails and Frog. Bowser easily beats these two. He has home court advantage, Tails is a useless sack of sht and Frog doesnt have anything that can beat Bowser. Im quite sure that most frogs are an easy meal for most lizards, why would this be any different, especially with the massive size difference.
Hell their team is coming in so overconfident that Link is the only one that came ready to fight and the form he has, has nothing that can get him through the castle.
I actually had more. Just saw the notification. ---
You're entering a realm which is unusual. Maybe it's magic, or contains some kind of monster. The second one. PSN-Paters1 XBL-Cyanide Sucker LoL-SuperPattyCakes