Thor (A Certain Magical Index) vs Fairy Tail

[Aldarion]

By act of ROB, Thor from A Certain Magical Index is transported to Fairy Tail world, and immediately goes out to seek trouble strong opponents.

1) Who is the strongest mage from Fairy Tail universe he can beat?
2) Can Fairy Tail guild beat him:
2a) at the end of the series?
2b) just after the first timeskip?

 

[Thegoldenboy2188]

Fairy Tail may actually have higher stats than Thor lol. Only problem is how they gonna hit him with almighty but he shouldn't be able to hurt them.