Monsters featured in Power Rangers Operation Overdrive
- Agrios [631–633]#631 - Home and Away, #632 - Home and Away II, #633 - Way Back When
- Benglo [617–619, 621, 623–628, 630–633]#617 - Man of Mercury, #618 - Man of Mercury II, #619 - Behind the Scenes, #621 - It’s Hammer Time, #623 - One Gets Away, #624 - Once a Ranger, #625 - Once a Ranger II, #626 - One Fine Day, #627 - Ronny on Empty, #628 - Ronny on Empty II, #630 - Red Ranger Unplugged, #631 - Home and Away, #632 - Home and Away II, #633 - Way Back When
- Big Mouth Monster [612, 633]#612 - Both Sides Now, #633 - Way Back When
- Blothgaar [622]#622 - Out of Luck
- Bombardo [610, 633]#610 - Pirate in Pink, #633 - Way Back When
- Bullox [615–616]#615 - Face to Face, #616 - Face to Face II
- “Camera Monster” [614]#614 - Lights, Camera, Dax
- Cheetar [617–618]#617 - Man of Mercury, #618 - Man of Mercury II
- Chillers [605, 607–608, 613, 615, 618–621, 624–625, 627, 630–631, 633, 635–636]#605 - Kick into Overdrive, #607 - The Underwater World, #608 - Heart of Blue, #613 - Follow the Ranger, #615 - Face to Face, #618 - Man of Mercury II, #619 - Behind the Scenes, #620 - Just Like Me, #621 - It’s Hammer Time, #624 - Once a Ranger, #625 - Once a Ranger II, #627 - Ronny on Empty, #630 - Red Ranger Unplugged, #631 - Home and Away, #633 - Way Back When, #635 - Nothing to Lose, #636 - Crown and Punishment
- Crazar [630, 632]#630 - Red Ranger Unplugged, #632 - Home and Away II
- “Cybernetic Rex” [627–628]#627 - Ronny on Empty, #628 - Ronny on Empty II
- Datum [629]#629 - Things Not Said
- Dragonizer [613]#613 - Follow the Ranger
- “Fearcats’s Machine” [631, 633]#631 - Home and Away, #633 - Way Back When
- “Fearcats’s Robot” [621]#621 - It’s Hammer Time
- “Fearcats’s Robot Mark II” [623, 633]#623 - One Gets Away, #633 - Way Back When
- “Fearcats’s Robot Mark III” [626]#626 - One Fine Day
- Flurious [605–609, 613, 615–621, 623–628, 630–632, 634–636]#605 - Kick into Overdrive, #606 - Kick into Overdrive II, #607 - The Underwater World, #608 - Heart of Blue, #609 - Weather or Not, #613 - Follow the Ranger, #615 - Face to Face, #616 - Face to Face II, #617 - Man of Mercury, #618 - Man of Mercury II, #619 - Behind the Scenes, #620 - Just Like Me, #621 - It’s Hammer Time, #623 - One Gets Away, #624 - Once a Ranger, #625 - Once a Ranger II, #626 - One Fine Day, #627 - Ronny on Empty, #628 - Ronny on Empty II, #630 - Red Ranger Unplugged, #631 - Home and Away, #632 - Home and Away II, #634 - Two Fallen Foes, #635 - Nothing to Lose, #636 - Crown and Punishment
- “Flurious’s Robot” [619, 633]#619 - Behind the Scenes, #633 - Way Back When
- Flurrex [636]#636 - Crown and Punishment
- “Garbage Warrior” [629]#629 - Things Not Said
- Generalissimo [624]#624 - Once a Ranger
- Giant Sea Monster [606]#606 - Kick into Overdrive II
- “Golem Warrior” [629]#629 - Things Not Said
- Kamdor [608, 610, 612, 614, 617, 619, 621, 623–625, 628–629, 631–634]#608 - Heart of Blue, #610 - Pirate in Pink, #612 - Both Sides Now, #614 - Lights, Camera, Dax, #617 - Man of Mercury, #619 - Behind the Scenes, #621 - It’s Hammer Time, #623 - One Gets Away, #624 - Once a Ranger, #625 - Once a Ranger II, #628 - Ronny on Empty II, #629 - Things Not Said, #631 - Home and Away, #632 - Home and Away II, #633 - Way Back When, #634 - Two Fallen Foes
- Lava Lizards [605–606, 609, 611, 613–616, 620–625, 627–628, 631, 633, 635]#605 - Kick into Overdrive, #606 - Kick into Overdrive II, #609 - Weather or Not, #611 - At All Cost, #613 - Follow the Ranger, #614 - Lights, Camera, Dax, #615 - Face to Face, #616 - Face to Face II, #620 - Just Like Me, #621 - It’s Hammer Time, #622 - Out of Luck, #623 - One Gets Away, #624 - Once a Ranger, #625 - Once a Ranger II, #627 - Ronny on Empty, #628 - Ronny on Empty II, #631 - Home and Away, #633 - Way Back When, #635 - Nothing to Lose
- Lavadactyls [615–616, 627, 633]#615 - Face to Face, #616 - Face to Face II, #627 - Ronny on Empty, #633 - Way Back When
- Magmador [635]#635 - Nothing to Lose
- Mig [616–619, 621, 623–628, 630–633]#616 - Face to Face II, #617 - Man of Mercury, #618 - Man of Mercury II, #619 - Behind the Scenes, #621 - It’s Hammer Time, #623 - One Gets Away, #624 - Once a Ranger, #625 - Once a Ranger II, #626 - One Fine Day, #627 - Ronny on Empty, #628 - Ronny on Empty II, #630 - Red Ranger Unplugged, #631 - Home and Away, #632 - Home and Away II, #633 - Way Back When
- Miratrix [608, 610, 612, 614, 617, 619, 621, 623–625, 627–629, 631–634]#608 - Heart of Blue, #610 - Pirate in Pink, #612 - Both Sides Now, #614 - Lights, Camera, Dax, #617 - Man of Mercury, #619 - Behind the Scenes, #621 - It’s Hammer Time, #623 - One Gets Away, #624 - Once a Ranger, #625 - Once a Ranger II, #627 - Ronny on Empty, #628 - Ronny on Empty II, #629 - Things Not Said, #631 - Home and Away, #632 - Home and Away II, #633 - Way Back When, #634 - Two Fallen Foes
- Miratrix Monster [634]#634 - Two Fallen Foes
- Moltor [605–607, 609, 611, 613–616, 620–625, 627–628, 631–635]#605 - Kick into Overdrive, #606 - Kick into Overdrive II, #607 - The Underwater World, #609 - Weather or Not, #611 - At All Cost, #613 - Follow the Ranger, #614 - Lights, Camera, Dax, #615 - Face to Face, #616 - Face to Face II, #620 - Just Like Me, #621 - It’s Hammer Time, #622 - Out of Luck, #623 - One Gets Away, #624 - Once a Ranger, #625 - Once a Ranger II, #627 - Ronny on Empty, #628 - Ronny on Empty II, #631 - Home and Away, #632 - Home and Away II, #633 - Way Back When, #634 - Two Fallen Foes, #635 - Nothing to Lose
- Moltorzord [613]#613 - Follow the Ranger
- “Prince Warrior” [629]#629 - Things Not Said
- Skeltex [614]#614 - Lights, Camera, Dax
- “Speaker Monster” [614]#614 - Lights, Camera, Dax
- “Stone Warrior” [629, 633]#629 - Things Not Said, #633 - Way Back When
- Temple Monster [607]#607 - The Underwater World
- Thrax [624–625]#624 - Once a Ranger, #625 - Once a Ranger II
- Top Hat [621]#621 - It’s Hammer Time
- Ultrog [608, 633]#608 - Heart of Blue, #633 - Way Back When
- Vulcon [611]#611 - At All Cost
- Vulturus [624–625]#624 - Once a Ranger, #625 - Once a Ranger II
- Vulturus Maximus [625]#625 - Once a Ranger II
- Weather Monster [609]#609 - Weather or Not
- “Winged Warrior” [629]#629 - Things Not Said
Total: 46 monsters