I'm changing my answer from Barret to Cid. The reason for this is because after playing the game again, I see him as the most well developed character even though his role in the game was smaller. He dedicated his entire life to science, and going into space. He was a very intelligent person who built his own rocket ship, think about the hard work that would involve. Cid is a hardass, he's your typical Die Hard/Action hero type of character, if you know what I mean.