I voted for Odin and Yojimbo. Yojimbo is cool when you get his FV to the max, but that uses a lot of gil and time. Kogoro is kind of cool, but Daigoro in batle means Yojimbo doesn't like you much. Sleipner (Odin's six-legged horse) is the best though, and Zantetsuken/Steel Bladed Sword/Gunge Lance are guaranteed, whereas Zanmato isn't. Gilgamesh would be better if I knew more about him, but unfortunately the only time I have encountered him is in FFVIII where his attacks were pointless (mainly Excalipoor). Who wants an attack that deals 1 damage to all enemies?