In TSW, he's Sid, not Cid.
Quote Originally Posted by abrojtm
FFVII: The first Cid that joins your party (don't count FFIII, he doesn't really "join").
Cid Pollendina joins the party in FFIV.
Also a dragoon.
Not actually.
FFX: Finally Cid reverts back to airships.
Cid Fabul was all about airships in FFIX.