Monsters featured in Power Rangers Ninja Steel

• Abrakadanger [850]
  #850 - Abrakadanger
• Badpipes [837]
  #837 - My Friend Redbot
• Basherbots [840, 843–845, 848, 850–853]
  #840 - Rocking & Rolling, #843 - Family Fusion, #844 - Ace and the Race, #845 - The Royal Rival, #848 - Monkey Business, #850 - Abrakadanger, #851 - Helping Hand, #852 - Galvanax Rises, #853 - Past, Presents, and Future
• Cat O’Clock [849, 853]
  #849 - The Adventures of Redbot, #853 - Past, Presents, and Future
• Cleocatra [853]
  #853 - Past, Presents, and Future
• Cosmo Royale [832–852]
  #832 - Return of the Prism, #833 - Forged in Steel, #834 - Live and Learn, #835 - Presto Change-O, #836 - Drive to Survive, #837 - My Friend Redbot, #838 - Hack Attack, #839 - Gold Rush, #840 - Rocking & Rolling, #841 - The Ranger Ribbon, #842 - Poisonous Plots, #843 - Family Fusion, #844 - Ace and the Race, #845 - The Royal Rival, #846 - The Royal Rumble, #847 - Grave Robber, #848 - Monkey Business, #849 - The Adventures of Redbot, #850 - Abrakadanger, #851 - Helping Hand, #852 - Galvanax Rises
• Cyborg Aiden [841–843]
  #841 - The Ranger Ribbon, #842 - Poisonous Plots, #843 - Family Fusion
• Drillion [845–846]
  #845 - The Royal Rival, #846 - The Royal Rumble
• Forcefear [851]
  #851 - Helping Hand
• Galvanax [832–839, 841–846, 849–853]
  #832 - Return of the Prism, #833 - Forged in Steel, #834 - Live and Learn, #835 - Presto Change-O, #836 - Drive to Survive, #837 - My Friend Redbot, #838 - Hack Attack, #839 - Gold Rush, #841 - The Ranger Ribbon, #842 - Poisonous Plots, #843 - Family Fusion, #844 - Ace and the Race, #845 - The Royal Rival, #846 - The Royal Rumble, #849 - The Adventures of Redbot, #850 - Abrakadanger, #851 - Helping Hand, #852 - Galvanax Rises, #853 - Past, Presents, and Future
• Hacktrack [838, 847, 853]
  #838 - Hack Attack, #847 - Grave Robber, #853 - Past, Presents, and Future
• Korvaka [832]
  #832 - Return of the Prism
• Kudabots [832–850, 853]
  #832 - Return of the Prism, #833 - Forged in Steel, #834 - Live and Learn, #835 - Presto Change-O, #836 - Drive to Survive, #837 - My Friend Redbot, #838 - Hack Attack, #839 - Gold Rush, #840 - Rocking & Rolling, #841 - The Ranger Ribbon, #842 - Poisonous Plots, #843 - Family Fusion, #844 - Ace and the Race, #845 - The Royal Rival, #846 - The Royal Rumble, #847 - Grave Robber, #848 - Monkey Business, #849 - The Adventures of Redbot, #850 - Abrakadanger, #853 - Past, Presents, and Future
• Lavagor [832]
  #832 - Return of the Prism
• Madame Odius [832–839, 841–843, 845–846, 850–852]
  #832 - Return of the Prism, #833 - Forged in Steel, #834 - Live and Learn, #835 - Presto Change-O, #836 - Drive to Survive, #837 - My Friend Redbot, #838 - Hack Attack, #839 - Gold Rush, #841 - The Ranger Ribbon, #842 - Poisonous Plots, #843 - Family Fusion, #845 - The Royal Rival, #846 - The Royal Rumble, #850 - Abrakadanger, #851 - Helping Hand, #852 - Galvanax Rises
• Phonepanzee [848]
  #848 - Monkey Business
• Ripcon [832–843, 853]
  #832 - Return of the Prism, #833 - Forged in Steel, #834 - Live and Learn, #835 - Presto Change-O, #836 - Drive to Survive, #837 - My Friend Redbot, #838 - Hack Attack, #839 - Gold Rush, #840 - Rocking & Rolling, #841 - The Ranger Ribbon, #842 - Poisonous Plots, #843 - Family Fusion, #853 - Past, Presents, and Future
• Ripperrat [833]
  #833 - Forged in Steel
• “Shadow Monster” [839]
  #839 - Gold Rush
• Shoespike [844]
  #844 - Ace and the Race
• Skullgators [834, 839, 843, 845, 847]
  #834 - Live and Learn, #839 - Gold Rush, #843 - Family Fusion, #845 - The Royal Rival, #847 - Grave Robber
• Slogre [835, 847]
  #835 - Presto Change-O, #847 - Grave Robber
• Spinferno [834, 847]
  #834 - Live and Learn, #847 - Grave Robber
• Stonedozer [840]
  #840 - Rocking & Rolling
• Tangleweb [836]
  #836 - Drive to Survive
• Toxitea [842]
  #842 - Poisonous Plots
• Trapsaw [841, 847, 849]
  #841 - The Ranger Ribbon, #847 - Grave Robber, #849 - The Adventures of Redbot

Total: 27 monsters