Cid:

ff1-- added in DOS as a back-reference.
ff2-- owner of an airship in either Palm or Poft.
ff3-- I have no clue :}
ff4-- Another airship dude, and he's got really freaky looking goggles on.
ff5-- an inventor, he has a grandson named Mid
ff6-- A father-figure to Celes. I think he was a scientist under Kefka?
ff7-- PC
ff8-- Founder of the Garden in Balamb
ff9-- King of Lindblum
ff10/10-2-- Rikku's father
FFTA-- the leader of teh Judges

Biggs/Vicks and Wedge:
ff6-- Soldiers fighting with Terra
ff7-- heck if I know
ff8-- Galbadian soldiers

Chocobos go back to ff2. There is one in the entire world, and dang but it is useful.