Magic is the most useful skill above all else in this game, which actually makes sense.

And really, it's true, no character is useless. Some people may think that at first, but each character has some special use.

Another thing about Relm, she can have the third best Magic with the Cat Hood, next to Tina and Celes, which is really saying something.

About Shadow, he has an extremely high (insert stat here that works as 'evasion'). Especially at higher levels. And the added bonus of Interceptor for extra damage. Shuriken are also extremely cheap for alot of damage, very early in the game. (Buy 99 when you start Mash's scenario, you'll still have some by the Floating Continent probably.)

As for Umaro, his frequent attacks by throwing your party (xD) and the Blizzard Orb, are very nice, although it's quite understandable if someone doesn't like him.

Gau needs no explanation.

Setzer definitely does not need an explanation. Although you left out the Echo Screen trick...so meh.