OMG you guys, the creature creator is so much fun!
I have this thing with RPG's like this where I become a bit overwhelmed if there are too many features. FFX-2 is kind of a confusing mess mini-game and "extra feature" wise to begin with, so I kind of eyerolled at the creature creator but it's kind of a joy to mess around with.
For example, you start out with Brother, who when attacking, screams "YUNAAAA!!" (still weird that she's his cousin and he's all over her but w/e) then hits enemies with his butt! He just did a power break on a large enemy and buttslammed it, I got such a laugh.
Into the bargain you can catch characters like Auron, Lulu, Tidus etc. if certain conditions are fulfilled. You can't control them, but in this game that's almost a bonus because if you give them cool abilities you don't have to worry about being quick with your choices and the AI is quite intuitive. There's one trophy for completing a fiend tale which just requires you to catch one and level it a few times. So I caught one of the lizard looking enemies and named it Lizzie (my mother's name lololol, creature indeed) and taught it protect spells and stuff, it's pretty cool.
I also caught the Guardian Beast and Elma, so it should be fun to mess around with all of them in battle.