another monster arena question.

[RyanML]

hey,

im trying to collect all of the monsters for the arena, just wondering what place for monsters is under Omega Dungeon? its still unknown for me. also whats under the Sunken Cave part? again this is still unknown for me. im guessing one is sin, but whats the other one?

[Tavrobel]

Omega Ruins: all unique to the Ruins, you must activate the Ruins on the Search grid, and capture one or more monsters there; none of these monsters appear elsewhere, except for Adamantoise, which are listed under Inside Sin; Defender Z is machina and cannot be casptured
Zaurus
Floating Death
Black Element
Halma
Puroboros
Spirit
Machea
Master Coeurl
Master Tonberry
Varuna

Cavern of the Stolen Fayth: all unique to the Cavern
Yowie
Imp
Dark Element
Nidhogg
Thorn
Valaha
Epaaj
Ghost
Tonberry (found in the back of the cave)