i heard that there are two more special characters being zack and a robot, to get the robot you have to get all twelve 1/35 soldiers then talk to the mythril cave dude and he will turn them into a robot which i heard you can use in your party. Zack is the other useable party member and it consists of getting you to hear that you remind aeries or airith of zack and of tifa saying that she found a dead person outside of midgar???? then you have to get the super sweeper and the masamune from the speed coaster at gold saucer, then go to gongaga reactor and use masamune then super sweeper(sorry if i got the order wrong) you will then meet zack and talk then go to the northern crater and you will meet him. these are just rumors i heard and i was woundering if they are true?
i hope so