[TokuKnight89]

Quote:

Originally Posted by Sheepweaver95

So our villain for this season is an Underground Empire of (presumably) Kajin-people. When was the last time we've had that in prior seasons?

You might also include Gorma of Dairanger on a provisional/tangential basis since the Palace didn't rise from the ground till around Ep. 20!

Balban of Gingaman originate from space, but spent a lot of time underwater. As did Matrintis of Goseiger.

The Orgs of Gaoranger based themselves in a cave.

The Shadow Line is hard to peg down given the nature of darkness and portals and sinking entire cities underground and erasing them from the social consciousness.