[dappa]

I dont use umaro much outside the battle arena. I would never use him or gau against such a boss as kefka. Sometimes kefka retaliates with some pretty nasty stuff when physically attacked.

And for gogo I like having him in my party for two reasons one mimicing the esper which can morph enemies to items and the other for his mugging and stealing abilities.

For the final dungeon when u split your characters into three parties I like to make sure there is one member in each party that can steal or mug.