They appear in the eight stages from Mega Man X3 to stop X in free sub-bosses room. If they aren't both defeated with their weaknesses, they will combine into Godkarmachine O Inary in the first Doppler Stage.
Rockman X3 manga
The Nightmare Police are two Reploids upgraded to have their bodies made entirely of Worms, granting them great power and allowing them to dismantle their bodies and move like Worms. Dr. Doppler only sees them as experiments, having no attachment to them and attacking them alongside X due to them being on his way. As they survived, Doppler decided to use Worms to upgrade them into "a powerful tool", turning them into Godkarmachine O Inary against their will.
Isoc studied Dr. Doppler's works related to the Limited and upgraded it, now calling it the Extreme. He then created two Reploids from data of Doppler's Nightmare Police and the Extreme, Sakitira CC and Pranara DD, and ordered them to search for Zero.
|Mega Man X3|
|Toxic Seahorse • Tunnel Rhino • Volt Catfish • Crush Crawfish • Neon Tiger • Gravity Beetle • Blast Hornet • Blizzard Buffalo|
|Maoh the Giant • Vile MK-II • Bit • Byte • Godkarmachine O Inary • Press Disposer • Volt Kurageil • Dr. Doppler • Sigma|
|Mega Man X's Special Weapons|
| Acid Burst • Tornado Fang • Triad Thunder • Spinning Blade • Ray Splasher • Gravity Well • Parasitic Bomb • Frost Shield|
- Other -
|Armor Parts • Walkthrough • List of Mega Man X3 enemies • Damage Data Chart • Game Script|