Midgar
The opening act of the game: the Mako reactors, the slums and upper plate of the city, and the Shinra Building itself. The following enemies can be encountered here.
1st Ray
Aero Combatant
Behemoth
Blood Taste
Blugu
Brain Pod
Ceasar
Chuse Tank
Crazy Saw
Cripshay
Cromwell
Deenglow
Eligor
Ghost
Grashtrike
Grenade Combatant
Grunt
Guard Hound
Hammer Blaster
Hedgehog Pie
Hell House
MP
Manhole
Mighty Grunt
Mono Drive
Moth Slasher
Proto Machinegun
Rocket Launcher
SOLDIER:3rd
Sahagin
Smogger
Special Combatant
Sweeper
Sword Dance
Vargid Police
Vice
Warning Board
Whole Eater
Zenene
1st Ray
Aero Combatant
Behemoth
Blood Taste
Blugu
Brain Pod
Ceasar
Chuse Tank
Crazy Saw
Cripshay
Cromwell
Deenglow
Eligor
Ghost
Grashtrike
Grenade Combatant
Grunt
Guard Hound
Hammer Blaster
Hedgehog Pie
Hell House
MP
Manhole
Mighty Grunt
Mono Drive
Moth Slasher
Proto Machinegun
Rocket Launcher
SOLDIER:3rd
Sahagin
Smogger
Special Combatant
Sweeper
Sword Dance
Vargid Police
Vice
Warning Board
Whole Eater
Zenene