Yesterday, I completed my run through Final Fantasy IV for the first time in 15 years (geeze I'm old!). Overall, I felt disappointed. I remember loving this game as a child. But the dialogue was horrible and over-generalized, emotions were shallow, and the gameplay was ridiculously easy. However, there were parts I teared up at (Tellah dying, Cecil finding out who his brother was, Rydia rejoining the party in the Underground), and I think those instances are what made want to replay this game.
Rydia is my favorite character of this game. She overcame the loss of her mother and most of her town. She was a young girl (around age 7 at the beginning of the game) and I always placed myself in her shoes. I loved her green hair (I've wanted green hair ever since), and, at times, she seems the most mature out of all the characters. My most favorite part of the game after she is swallowed by Leviathan and she returns just in time to "defeat" Golbez and save the group. Not to mention she is also the coolest playable character due to her call ability.