Final Fantasy 6 Advance (Sound Restoration Patched) - Part 26: Kefka's Tower
You will be able to use at most 12 characters in the final battle with Kefka, and against all the dungeons and bosses preceding that point. All your groups will engage in their own boss fights and exploration so you will need three strong parties.
It should be noted that if one of your parties possess the Moogle Charm and equips it on Mog that party can explore Kekfa's Tower without worrying about anything but boss fights. This may be able to be used to protect a weak party early on in picking up equipment, but in general you will still need three strong parties to complete some areas where the path divides.
It should also be noted that due to 2 extra characters being placed in the game, Umaro and Gogo, you will have two characters which will not be able to be used in the final battle. In short, you should decide well in advance to fighting in Kefka's Tower which two characters you should choose to ignore and not level up at all. The following are some considerations for doing so:
(When it is mentioned that a character is "required" for a particular task it means that it's unavoidable for using them in a particular scenario which normally involves boss fights and leveling up)
Terra - A strong all-around character with extremely high magical power, plus she can flip out and double her already considerable strength with her Morph ability. And she's sort of the central character, so it'd be a shame to leave her out.
Celes - Required for many of the early quests up until you get the airship. She has strong magical ability and her magic-absorption can be very useful in certain circumstances.
Edgar - Required for early quests in the world of ruin as well, he's a strong fighter and he has one of the best special abilities in the game.
Sabin - Also required for early quests, his blitzes and the bum rush make him invaluable.
Locke - Required for looting Narshe, and a good deal of the missions in the world of balance. He's only average as a fighter, but his "treasure hunting" abilities make him very handy to have around, so he should get a lot of use. (Alternative opinion: Locke is one of the best physical fighters in the game, as he has access to several of the game's best weapons. He's an absolute monster with the Genji Glove/Master's Scroll relic combination. Seeing as he doesn't have a unique ability that does damage, he's prime candidate for this combination.)
Cyan - Strong physical attacks, weak magic. The swordtechs are very useful when you have the time to charge up, but waiting for the that to happen while the enemy can get multiple hits due to the ATB system can be detrimental. Still, he can pull his weight.
Gogo - The most flexible character in the game. (S)he can copy any characters' attacks, spells, and techniques. Almost absurdly useful.
Shadow - Not exactly required for any quests, but he's often around, and his Throw skill gives him a variety of powerful attacks.
Relm - Not required for any quests, and Sketch may be a little dangerous to use because of the bug, but she's got the highest base magical power in the game. Nurture her spell-casting ability--you won't regret it.
Strago - Required to complete the Hidon sidequest. Decent magical ability and useful lores.
Mog - Required in order to complete the sidequest to recruit Umaro. His Dance skill can be useful but it's unpredictable.
Umaro - Not required for any quests. He has strong physical attacks and is a force to be reckoned with when he has the rage ring or blizzard orb, but you can't control him.
Setzer - Required for the quest in Darril's tomb. Slots is highly unreliable, but GP Toss can be valuable. He really hasn't got any showstopping skills, though, nor very strong basic stats. Fixed Dice can lead to high damage output, (especially with the Master's Scroll relic,) but because of its random nature can be unreliable. It may be best to avoid using him.
Gau - Not required for any quests. His rages make him uncontrollable and are a hassle to upgrade, but Gau can use certain enemy abilities that other characters can't use (such as the Nightshade Rage which confuses *any* enemy).
Anyway, you will need to split your party up into three teams. To make a well-rounded team, take one character from each column:
Your strongest normal physical attackers are: Edgar, Sabin, and Cyan. Edgar and Sabin both have physical attacks which can easily do 9999 damage and Cyan has powerful multi-enemy physical attacks when given time to charge up. Make sure each party has one.
Then you have your primary magic users. Those should be: Terra, Relm, and Celes. Make sure to teach them all the most powerful attack and healing spells.
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