FFIII

Ahriman
Cerberus
Two-Headed Dragon
Echidna

FFIV

Scarmiglione
Cagnazzo
Barbariccia
Rubicante

FFV

Atomos
Omega
Shinryu
Gilgamesh

FFVI

Orthros
Typhon
Phantom Train
Deathgaze

Correct if wrong.

FQ.