I'm gonna update!

Cloud- Before invasion of Midgar
Tifa- as soon as I got Cloud back
Aeris- Never
Barret- as soon as saving Corel
RedXIII- as soon as recieving it.
Yuffie- same as Red
Vincent- not yet (only have his lvl 1) (have Chaos)
Cid- same as Vincent (Have Highwind)

Just started invasion of Midgar!