Well, I've gotta say I like Odin more... Yeah Gilga does come out more often and even during boss battles...but Odin really helps when you're trying to level up because he only has one attack and it automatically kills all the enemies whereas Gilgamesh doesn't always kill all the enemies and he has one weak attack that does 1 damgage. Yes, 1 DAMAGE OF HP! This can also make a huge difference if, for some reason, your in a bad condition and about to die and then Odin comes and kills all the enemies! Know what I mean?