Well, although it has been established that Terra is the overall main character, Locke also seems to have major imput during her adventures. Locke is the guy who saved her ass in the beginning when the Empire was hunting her down.

Yes, I'm the kind of person who praises each character for their own individual traits, even if they are minor. In my opinion, Locke was a much better candidate to be the official leader of the party. Terra was a confused girl who was unsure of both her powers and her allegiance to the Returners. Locke was, of course, able to handle every situation in a calm orderly manner. Also, he made light of horrible situations, making even the most serious gamers giggle with many colourful emotions.

As for battle skills, Terra was your typical swordsan/red mage/summoner, making her skills dull and uninteresting. Not only can Locke learn nearly the same magic AND equip swords, but he's also your everyday typical insanely fast thief, making him a more interesting occupant in your party. At least in my opinion.

For those who interpret Locke as the main character, mad props to all of you. I have no understanding why Square would put in Terra when they have a perfectly good Celes to show off, too. Greetings, and live long and prospher.