Technically, all the characters with the exception of Crono had some kind of backstory to them. Frog's and Magus's backstory stood up the most out of all of them since you do explore them actively due to them being tied to the main quest. Plus, Magus's history and timeline was pretty much the trigger for the whole game. But yeah, I might be off here. Despite this being a port, it might do some good being able to play this on a DS. However, I don't think I'm that excited for this game. The new content and possibly remastered music might be nice, but doubtful I would play it again since the SNES version was good enough on its own.