Monsters featured in Mighty Morphin Power Rangers (season 1)

- Babe Ruthless [32]#32 - A Star is Born
- Baboo [1–60]#1 - Day of the Dumpster, #2 - High Five, #3 - Teamwork, #4 - A Pressing Engagement, #5 - Different Drum, #6 - Food Fight, #7 - Big Sisters, #8 - I, Eye Guy, #9 - For Whom the Bell Trolls, #10 - Happy Birthday, Zack, #11 - No Clowning Around, #12 - Power Ranger Punks, #13 - Peace, Love and Woe, #14 - Foul Play in the Sky, #15 - Dark Warrior, #16 - Switching Places, #17 - Green With Evil Part I, #18 - Green With Evil Part II, #19 - Green With Evil Part III, #20 - Green With Evil Part IV, #21 - Green With Evil Part V, #22 - The Trouble with Shellshock, #23 - Itsy Bitsy Spider, #24 - The Spit Flower, #25 - Life’s a Masquerade, #26 - Gung Ho!, #27 - Wheel of Misfortune, #28 - Island of Illusion Part I, #29 - Island of Illusion Part II, #30 - The Rockstar, #31 - Calamity Kimberly, #32 - A Star is Born, #33 - The Yolk’s on You!, #34 - The Green Candle Part I, #35 - The Green Candle Part II, #36 - Birds of a Feather, #37 - Clean-Up Club, #38 - A Bad Reflection on You, #39 - Doomsday Part I, #40 - Doomsday Part II, #41 - A Pig Surprise, #42 - Something Fishy, #43 - Rita’s Seed of Evil, #44 - Lions & Blizzards, #45 - To Flea or Not to Flee, #46 - Reign of the Jellyfish, #47 - Crystal of Nightmares, #48 - Plague of the Mantis, #49 - Return of an Old Friend Part I, #50 - Return of an Old Friend Part II, #51 - Grumble Bee, #52 - Two Heads Are Better than One, #53 - Fowl Play, #54 - Trick or Treat, #55 - Second Chance, #56 - On Fins and Needles, #57 - Enter... the Lizzinator, #58 - Football Season, #59 - Mighty Morphin’ Mutants, #60 - An Oyster Stew
- Bones [2]#2 - High Five
- Cardiatron [36]#36 - Birds of a Feather
- Chunky Chicken [7]#7 - Big Sisters
- Commander Crayfish [59]#59 - Mighty Morphin’ Mutants
- Cyclops [34–35]#34 - The Green Candle Part I, #35 - The Green Candle Part II
- Cyclopsis [39–40]#39 - Doomsday Part I, #40 - Doomsday Part II
- Dark Warrior [15]#15 - Dark Warrior
- Dramole [49–50]#49 - Return of an Old Friend Part I, #50 - Return of an Old Friend Part II
- Eye Guy [8, 28]#8 - I, Eye Guy, #28 - Island of Illusion Part I
- Fang [33]#33 - The Yolk’s on You!
- Fighting Flea [45]#45 - To Flea or Not to Flee
- Finster [1–15, 17–18, 20–28, 31–36, 38–40, 45–53, 55–57, 59–60]#1 - Day of the Dumpster, #2 - High Five, #3 - Teamwork, #4 - A Pressing Engagement, #5 - Different Drum, #6 - Food Fight, #7 - Big Sisters, #8 - I, Eye Guy, #9 - For Whom the Bell Trolls, #10 - Happy Birthday, Zack, #11 - No Clowning Around, #12 - Power Ranger Punks, #13 - Peace, Love and Woe, #14 - Foul Play in the Sky, #15 - Dark Warrior, #17 - Green With Evil Part I, #18 - Green With Evil Part II, #20 - Green With Evil Part IV, #21 - Green With Evil Part V, #22 - The Trouble with Shellshock, #23 - Itsy Bitsy Spider, #24 - The Spit Flower, #25 - Life’s a Masquerade, #26 - Gung Ho!, #27 - Wheel of Misfortune, #28 - Island of Illusion Part I, #31 - Calamity Kimberly, #32 - A Star is Born, #33 - The Yolk’s on You!, #34 - The Green Candle Part I, #35 - The Green Candle Part II, #36 - Birds of a Feather, #38 - A Bad Reflection on You, #39 - Doomsday Part I, #40 - Doomsday Part II, #45 - To Flea or Not to Flee, #46 - Reign of the Jellyfish, #47 - Crystal of Nightmares, #48 - Plague of the Mantis, #49 - Return of an Old Friend Part I, #50 - Return of an Old Friend Part II, #51 - Grumble Bee, #52 - Two Heads Are Better than One, #53 - Fowl Play, #55 - Second Chance, #56 - On Fins and Needles, #57 - Enter... the Lizzinator, #59 - Mighty Morphin’ Mutants, #60 - An Oyster Stew
- Frankenstein [25–26]#25 - Life’s a Masquerade, #26 - Gung Ho!
- Genie [16]#16 - Switching Places
- Giant [2]#2 - High Five
- Gnarly Gnome [5]#5 - Different Drum
- Goatan [44]#44 - Lions & Blizzards
- Goldar [1–4, 7–11, 14–60]#1 - Day of the Dumpster, #2 - High Five, #3 - Teamwork, #4 - A Pressing Engagement, #7 - Big Sisters, #8 - I, Eye Guy, #9 - For Whom the Bell Trolls, #10 - Happy Birthday, Zack, #11 - No Clowning Around, #14 - Foul Play in the Sky, #15 - Dark Warrior, #16 - Switching Places, #17 - Green With Evil Part I, #18 - Green With Evil Part II, #19 - Green With Evil Part III, #20 - Green With Evil Part IV, #21 - Green With Evil Part V, #22 - The Trouble with Shellshock, #23 - Itsy Bitsy Spider, #24 - The Spit Flower, #25 - Life’s a Masquerade, #26 - Gung Ho!, #27 - Wheel of Misfortune, #28 - Island of Illusion Part I, #29 - Island of Illusion Part II, #30 - The Rockstar, #31 - Calamity Kimberly, #32 - A Star is Born, #33 - The Yolk’s on You!, #34 - The Green Candle Part I, #35 - The Green Candle Part II, #36 - Birds of a Feather, #37 - Clean-Up Club, #38 - A Bad Reflection on You, #39 - Doomsday Part I, #40 - Doomsday Part II, #41 - A Pig Surprise, #42 - Something Fishy, #43 - Rita’s Seed of Evil, #44 - Lions & Blizzards, #45 - To Flea or Not to Flee, #46 - Reign of the Jellyfish, #47 - Crystal of Nightmares, #48 - Plague of the Mantis, #49 - Return of an Old Friend Part I, #50 - Return of an Old Friend Part II, #51 - Grumble Bee, #52 - Two Heads Are Better than One, #53 - Fowl Play, #54 - Trick or Treat, #55 - Second Chance, #56 - On Fins and Needles, #57 - Enter... the Lizzinator, #58 - Football Season, #59 - Mighty Morphin’ Mutants, #60 - An Oyster Stew
- Goo Fish [42]#42 - Something Fishy
- Grumble Bee [51]#51 - Grumble Bee
- Hatchasaurus [36]#36 - Birds of a Feather
- Jellyfish [46]#46 - Reign of the Jellyfish
- King Sphinx [4, 29]#4 - A Pressing Engagement, #29 - Island of Illusion Part II
- Knasty Knight [10, 29, 47]#10 - Happy Birthday, Zack, #29 - Island of Illusion Part II, #47 - Crystal of Nightmares
- Lizzinator [57]#57 - Enter... the Lizzinator
- Lokar [28–29, 39–40]#28 - Island of Illusion Part I, #29 - Island of Illusion Part II, #39 - Doomsday Part I, #40 - Doomsday Part II
- Madame Woe [13]#13 - Peace, Love and Woe
- Mantis [48]#48 - Plague of the Mantis
- Minotaur [3]#3 - Teamwork
- Mr. Ticklesneezer [9]#9 - For Whom the Bell Trolls
- Mutitus [28–29]#28 - Island of Illusion Part I, #29 - Island of Illusion Part II
- Octoplant [43]#43 - Rita’s Seed of Evil
- Oysterizer [60]#60 - An Oyster Stew
- Peckster [53]#53 - Fowl Play
- Pineoctopus [11, 28]#11 - No Clowning Around, #28 - Island of Illusion Part I
- Polluticorn [37]#37 - Clean-Up Club
- Pudgy Pig [6, 28, 41]#6 - Food Fight, #28 - Island of Illusion Part I, #41 - A Pig Surprise
- Pumpkin Rapper [54]#54 - Trick or Treat
- Putty Patrollers [1–5, 7–9, 11–20, 22–34, 37–38, 41–60]#1 - Day of the Dumpster, #2 - High Five, #3 - Teamwork, #4 - A Pressing Engagement, #5 - Different Drum, #7 - Big Sisters, #8 - I, Eye Guy, #9 - For Whom the Bell Trolls, #11 - No Clowning Around, #12 - Power Ranger Punks, #13 - Peace, Love and Woe, #14 - Foul Play in the Sky, #15 - Dark Warrior, #16 - Switching Places, #17 - Green With Evil Part I, #18 - Green With Evil Part II, #19 - Green With Evil Part III, #20 - Green With Evil Part IV, #22 - The Trouble with Shellshock, #23 - Itsy Bitsy Spider, #24 - The Spit Flower, #25 - Life’s a Masquerade, #26 - Gung Ho!, #27 - Wheel of Misfortune, #28 - Island of Illusion Part I, #29 - Island of Illusion Part II, #30 - The Rockstar, #31 - Calamity Kimberly, #32 - A Star is Born, #33 - The Yolk’s on You!, #34 - The Green Candle Part I, #37 - Clean-Up Club, #38 - A Bad Reflection on You, #41 - A Pig Surprise, #42 - Something Fishy, #43 - Rita’s Seed of Evil, #44 - Lions & Blizzards, #45 - To Flea or Not to Flee, #46 - Reign of the Jellyfish, #47 - Crystal of Nightmares, #48 - Plague of the Mantis, #49 - Return of an Old Friend Part I, #50 - Return of an Old Friend Part II, #51 - Grumble Bee, #52 - Two Heads Are Better than One, #53 - Fowl Play, #54 - Trick or Treat, #55 - Second Chance, #56 - On Fins and Needles, #57 - Enter... the Lizzinator, #58 - Football Season, #59 - Mighty Morphin’ Mutants, #60 - An Oyster Stew
- Rhinoblaster [58]#58 - Football Season
- Rita Repulsa [1–60]#1 - Day of the Dumpster, #2 - High Five, #3 - Teamwork, #4 - A Pressing Engagement, #5 - Different Drum, #6 - Food Fight, #7 - Big Sisters, #8 - I, Eye Guy, #9 - For Whom the Bell Trolls, #10 - Happy Birthday, Zack, #11 - No Clowning Around, #12 - Power Ranger Punks, #13 - Peace, Love and Woe, #14 - Foul Play in the Sky, #15 - Dark Warrior, #16 - Switching Places, #17 - Green With Evil Part I, #18 - Green With Evil Part II, #19 - Green With Evil Part III, #20 - Green With Evil Part IV, #21 - Green With Evil Part V, #22 - The Trouble with Shellshock, #23 - Itsy Bitsy Spider, #24 - The Spit Flower, #25 - Life’s a Masquerade, #26 - Gung Ho!, #27 - Wheel of Misfortune, #28 - Island of Illusion Part I, #29 - Island of Illusion Part II, #30 - The Rockstar, #31 - Calamity Kimberly, #32 - A Star is Born, #33 - The Yolk’s on You!, #34 - The Green Candle Part I, #35 - The Green Candle Part II, #36 - Birds of a Feather, #37 - Clean-Up Club, #38 - A Bad Reflection on You, #39 - Doomsday Part I, #40 - Doomsday Part II, #41 - A Pig Surprise, #42 - Something Fishy, #43 - Rita’s Seed of Evil, #44 - Lions & Blizzards, #45 - To Flea or Not to Flee, #46 - Reign of the Jellyfish, #47 - Crystal of Nightmares, #48 - Plague of the Mantis, #49 - Return of an Old Friend Part I, #50 - Return of an Old Friend Part II, #51 - Grumble Bee, #52 - Two Heads Are Better than One, #53 - Fowl Play, #54 - Trick or Treat, #55 - Second Chance, #56 - On Fins and Needles, #57 - Enter... the Lizzinator, #58 - Football Season, #59 - Mighty Morphin’ Mutants, #60 - An Oyster Stew
- Rockstar [30]#30 - The Rockstar
- Samurai Fan Man [31, 47]#31 - Calamity Kimberly, #47 - Crystal of Nightmares
- Scorpina [19–21, 27–30, 32, 36–40, 43–47, 49–50, 54]#19 - Green With Evil Part III, #20 - Green With Evil Part IV, #21 - Green With Evil Part V, #27 - Wheel of Misfortune, #28 - Island of Illusion Part I, #29 - Island of Illusion Part II, #30 - The Rockstar, #32 - A Star is Born, #36 - Birds of a Feather, #37 - Clean-Up Club, #38 - A Bad Reflection on You, #39 - Doomsday Part I, #40 - Doomsday Part II, #43 - Rita’s Seed of Evil, #44 - Lions & Blizzards, #45 - To Flea or Not to Flee, #46 - Reign of the Jellyfish, #47 - Crystal of Nightmares, #49 - Return of an Old Friend Part I, #50 - Return of an Old Friend Part II, #54 - Trick or Treat
- Shellshock [22, 28, 41]#22 - The Trouble with Shellshock, #28 - Island of Illusion Part I, #41 - A Pig Surprise
- “Skeleton Warriors” [2]#2 - High Five
- Slippery Shark [56]#56 - On Fins and Needles
- Snizzard [14, 28–29]#14 - Foul Play in the Sky, #28 - Island of Illusion Part I, #29 - Island of Illusion Part II
- Soccadillo [55]#55 - Second Chance
- Spidertron [23]#23 - Itsy Bitsy Spider
- Spit Flower [24]#24 - The Spit Flower
- Squatt [1–60]#1 - Day of the Dumpster, #2 - High Five, #3 - Teamwork, #4 - A Pressing Engagement, #5 - Different Drum, #6 - Food Fight, #7 - Big Sisters, #8 - I, Eye Guy, #9 - For Whom the Bell Trolls, #10 - Happy Birthday, Zack, #11 - No Clowning Around, #12 - Power Ranger Punks, #13 - Peace, Love and Woe, #14 - Foul Play in the Sky, #15 - Dark Warrior, #16 - Switching Places, #17 - Green With Evil Part I, #18 - Green With Evil Part II, #19 - Green With Evil Part III, #20 - Green With Evil Part IV, #21 - Green With Evil Part V, #22 - The Trouble with Shellshock, #23 - Itsy Bitsy Spider, #24 - The Spit Flower, #25 - Life’s a Masquerade, #26 - Gung Ho!, #27 - Wheel of Misfortune, #28 - Island of Illusion Part I, #29 - Island of Illusion Part II, #30 - The Rockstar, #31 - Calamity Kimberly, #32 - A Star is Born, #33 - The Yolk’s on You!, #34 - The Green Candle Part I, #35 - The Green Candle Part II, #36 - Birds of a Feather, #37 - Clean-Up Club, #38 - A Bad Reflection on You, #39 - Doomsday Part I, #40 - Doomsday Part II, #41 - A Pig Surprise, #42 - Something Fishy, #43 - Rita’s Seed of Evil, #44 - Lions & Blizzards, #45 - To Flea or Not to Flee, #46 - Reign of the Jellyfish, #47 - Crystal of Nightmares, #48 - Plague of the Mantis, #49 - Return of an Old Friend Part I, #50 - Return of an Old Friend Part II, #51 - Grumble Bee, #52 - Two Heads Are Better than One, #53 - Fowl Play, #54 - Trick or Treat, #55 - Second Chance, #56 - On Fins and Needles, #57 - Enter... the Lizzinator, #58 - Football Season, #59 - Mighty Morphin’ Mutants, #60 - An Oyster Stew
- Super Putties [26, 43, 46]#26 - Gung Ho!, #43 - Rita’s Seed of Evil, #46 - Reign of the Jellyfish
- Terror Toad [12, 29, 47]#12 - Power Ranger Punks, #29 - Island of Illusion Part II, #47 - Crystal of Nightmares
- Twin Man [38]#38 - A Bad Reflection on You
- Two-Headed Parrot [52]#52 - Two Heads Are Better than One
- Weaveworm [32]#32 - A Star is Born
Total: 59 monsters