This website has been a great resource for Phantasy Star for a long time, and PSIII is no exception. That said, something that I noticed a long time ago is that a lot of the locations listed for enemies are wrong.
Sometimes they’re not the first appearance of the enemy and more obvious locations aren’t listed, while some are just completely wrong. I’ve redone them myself, listing just one location per enemy and to keep it fair, I’ll only list a location if it’s somewhere you’d encounter in normal play through, if applicable, since the third generation gets trippy with enemy placement.
I’ve started with front-row monsters, then I’ll do back-row monsters, then front-row cyborgs, and finally back-row cyborgs.
Glop - Shusoran Castle
Ooze - Laden Surface
Slime - Skyhaven Dungeon
Fire - Aridia-Frigidia Passage
Murafire - Dahlia Dungeon
Azufire - Sage Isle
Nayl - Landen-Aquatica Passage
Flayl - Aridia Surface
Slayl - Aridia Surface
Dryad - Cille Castle
Nereid - Aridia-Frigidia Passage
Sylph - Aridia-Frigidia Passage
Buzzgull - Aquatica Surface
Lashgull - Aquatica Surface
Hackgull - Frigidia Surface
Eindon - Landen Surface
Tsveidon - Island Cave
Dreidon - Landen Surface
Clump - Weather/Satellite Control
Cluster - Weather/Satellite Control
Clique - Dahlia Surface
Chirper - Landen Surface
Warbler - Landen Surface
Squawker - Landen Surface
Lizrd - Landen Surface
Blizrd - Aridia Surface
Grizrd - Landen Surface
Spinner - Aridia Surface
Twirler - Aquatica Surface
Wizzer - LaShute Dungeon
Imp - ?
Impfoul - Sage Isle
Impvile - Terminus Surface
Nova - Elysian Surface
Pulsar - Frigidia Surface
Quasar - Skyhaven Dungeon

