Fav will always be Odin! He usually tends to be the summon in past FFs that has an actual story behind him. Wither its a lost love, or hatred of someone. He is usually epic.

He needs his one hit kill tho! don't go nerfing odin SE!

After you do the whole "lore" behind Odin thing and become his friend some how....

Every time you die "in a party" you have like a 5% chance of Odin coming to avenge you and he one shots the enemy! This could save your whole party in a sticky situation now and then.... I dunno, just an idea