I don't know whether to laugh or to head desk. You've been so busy making threads hating on Ivalice that you didn't do Omega...

You can meet Siegfried in the ghost cars sometimes, too.

Siegfriend Ghost Car Phantom Train Sigmascape 1.0

Chardarnook is 2.0. Guardian is 3.0 (Comes packaged with Ultros and Dadaluma). Kefka is 4.0. God Kefka is in Savage, and is required to be beaten to unlock Ultima Weapon Ultimate.