Juperos Carded Jur

[Zaratus]

Obviously you'd kill yourself at kasas now that they got Shield Reflect (ages ago you could oneshot SB them).

There is quite a good chunk of other Formless monsters around, though, just check RMS - from Mimics over Plasmas and Sleepers till Golems. Rachel 3, Einbech Mine and parts of Clocktower are Formless dungeons as well. Always might want to go there on sin(x) to farm stuff if you lack a sniper or love steal.