Quote Originally Posted by Ultima Shadow
Actually... I still prefere to have Gilgamesh instead of Odin since he comes more frequntly. Zantetsuken is actually useful in battles against Malboros and Ruby Dragons etc. But all in all, the only thing that really is great about him is that he looks awesome.
The advantage of Gilgamesh over Odin is that:
a) Gilgamesh can come out on boss battles (but Zantetsuken doesn't work)
b) Gilgamesh can come out at any point of the battle whereas Odin can only appear at the beginning.
c) Gilgamesh seems to appear more often.

But Odin does look cooler.