Well from the top:
Edward. I hate bards. There useless. I'm with Tellah on this one.
Cait Seith. What a useless jerk. It didn't seem to contribute anything to battle or the story. He just sat there with is useless being useless with his useless limit.
Renoa. Granted I have never finished VIII, battlewise she was pretty useless. Her and her retarded boomerang thingy... and her little dog too!
Quina. s/her and s/his stupid fork. Let me say that Blue magic is neat, but the work that you have to go through in order to get quina's is retarded. Eating monsters to get Blue magic skills is the worst idea I have ever heard of.
Kimahri. I thought he was a Dragoon at first, but to my shock jump was just another retarded ploy to get Blue Magic. Whee....
That's about it.