These seem to be the last of the random mob enemies I have left to recruit. The first one I'm not sure if I can actually find anywhere since it was some weird boss thing at the end of the Sealed Monster's Cave. I tried running around in the cave with quintuple encounter on for a while, and it never showed up. Not sure where else it might appear. The second one I'm not sure I have access to anymore since Hiruko ate the whole place. Don't even remember where the Calamity Star was anymore. Can't think of any other locations that spawn the enemies from there.