- Adaptational Job Change: The core Ohrangers are Military Superheroes while KingRanger is an ancient knight of sorts. The Power Rangers are all high school students.
- Age Lift: Many of the Chouriki Sentai Ohranger team members were adults, with Riki/KingRanger as a kid. Here, as before, the Power Rangers are teenagers.
- Composite Character: As Super Sentai teams aren't connected to one another, Chouriki Sentai Ohranger's team had jack to do with the teams of Kyōryū Sentai Zyuranger, Gosei Sentai Dairanger or Ninja Sentai Kakuranger, whereas here, the Zeo Rangers are, barring Tanya (until Power Rangers Turbo) and Trey, the original Zyuranger/Dairanger/Kakuranger-based Power Rangers with new powers.
- Contrasting Sequel Main Character: While Tommy is more or less the same person as Jason (who has returned as the Sixth Ranger for this season) by this point, the other Rangers contrast their predecessors in Mighty Morphin' Power Rangers.
- The Blue Rangers - Billy and Rocky. Billy was The Smart Guy of the Mighty Morphin team. Rocky is Book Dumb.
- The Black/Green Rangers - Zack and Adam. Zack was energetic and extroverted while Adam is quiet and shy. Their Ranger colors are also different.
- The Pink Rangers - Kim and Kat. While Kim was the quintessential All-American Valley Girl, Kat is Australian. While Kim was more on the short side, Kat is a Statuesque Stunner. While Kim was extroverted, Kat is more introverted.
- The Yellow Rangers - Trini, Aisha, and Tanya. While Aisha and Trini started as already integrated members of their friends, Tanya is the new kid of the group. She also isn't a trained martial artist like they were.
- The Mighty Morphin Rangers used Dinosaur mecha while the Zeo Rangers' Zords are inspired by creatures of mythology and religion.
- The Sixth Rangers - Trey and Tommy. Unlike Tommy's first Ranger outing as a villain, Trey's first appearances has him helping the Zeo Rangers against King Mondo and his army. While Green Ranger's identity was known to the viewers at the very least, the Gold Ranger's was a complete mystery until later on, with Billy acting as a Red Herring.
- Costume Evolution: The series marks the first time the veteran Rangers receive new costumes except for Tommy, who receives his third.
- Discard and Draw: With the destruction of both the dino and ninja power coins, the Rangers tap into the power of the Zeo crystal to reach the next stage in the fight against evil.
- Five-Token Band: Tommy (Native American), Kat (Australian), Adam (Korean-American), Rocky (Latino-American), Tanya (African-American), and Jason (white).
- Five-Man Band:
- Hourglass Plot: In the inaugural season, Jason was The Leader and Red Ranger while Tommy is the golden armored Sixth Ranger. Here, it's the other way around.
- Mythical Motifs: The Rangers' new Zeo zords are based on creatures and structures from ancient myths and religions.
- Zeo Zord I (piloted by Kat) is based on a Moai.
- Zeo Zord II (piloted by Tanya) is based on a Dogu.
- Zeo Zord III (piloted by Rocky) is based on a sphinx.
- Zeo Zord IV (piloted by Adam) is based on Taurus the Bull.
- Zeo Zord V (piloted by Tommy) is based on The Phoenix.
- Pyramidas (piloted by Trey and Jason) is based on a pyramid.
- Nice Guy: As always, they're genuinely kind and well-meaning people.
- Took a Level in Badass: It was said late last season that the Zeo Crystal perpetually grows in power over time, and given the sheer amounts of level-grinding that the Rangers undergo during the course of the season, that claim is pretty evident. With the fall of King Mondo's crown after Tommy and Trey punch him down, especially after what it took to beat him in their first battle, the Zeo's power is all but triumphant.
Kat Hillard / Zeo Ranger I
The second Mighty Morphin Pink Ranger, Kat found her Zeo Subcrystal in the Australian Outback as a child. After having her original age restored, Kat became Zeo Ranger I - Pink.
Note: This section is only for tropes used in Zeo. For the rest, see the character sheets for Mighty Morphin, and Turbo.
- The Ace: Has several hobbies and skills and does them perfectly. Adam and Tanya lampshade this.
- Adaptational Badass: Kat would fall victim to the Distress Ball a few times, but that's nothing to how bad Momo would hold it, being Ohranger's Damsel in Distress.
- Adaptational Nice Girl: Momo and Juri could get a bit catty with their bickering, especially in the early episodes of Ohranger. Kat meanwhile gets along great with Tanya and even invites the latter to stay at her house.
- Adaptation Relationship Overhaul: Momo Maruo and Gorō Hoshino never enter a relationship like their counterparts here.
- Depending on the Writer: Some episodes see Kat be as competent as the side rangers (AKA play second fiddle to Red as he gets all the glory), others especially the episode of Digster sees Kat being reduced to Damsel in Distress style of fighting. This can be partially attributed to her Ohranger counterpart being kidnap-prone.
- Designated Girl Fight: When the rangers are battling Gasket and Archerina Kat as Zeo Ranger 1 usually has extended sequences against her. They even had a real 1 v 1 girl fight with Kat getting her Pink Zeo butt pummeled until she was saved.
- Fish out of Water: Both the character and the actor. It even made the blooper reel.Catherine: Chip?
Johnny and Austin: French Fry!
- Luckily, My Shield Will Protect Me: Her signature weapon, the Zeo Power Disc (can also double as Deadly Disc).
- The Smart Girl: Sometimes she is the most intelligent of the group.
- Soapbox Sadie: The whole team is willing to help, but she really prides herself on giving back to the community.
- Team Mom: Very mature and motherly.
- Tomboy and Girly Girl: Girly Girl to Tanya's Tomboy.
Tanya Sloan / Zeo Ranger II
When Master Vile turned the Rangers into children with the Orb of Doom, Aisha, the second Mighty Morphin Yellow Ranger, found a Zeo Subcrystal in Africa, only to give it to Tanya in her place. After growing to a teenager with the others, Tanya joined the four veteran Rangers as Zeo Ranger II - Yellow.
Note: This section is only for tropes used in Zeo. For the rest, see the character sheet for Power Rangers Turbo.
- Adaptational Nice Girl: Juri's remarks could get somewhat catty towards Momo and be somewhat critical of her male teammates, particularly Shouhei and Yuji. Tanya however gets along perfectly fine with Kat and is supportive of her friends, plus is later implied to be in a relationship with Adam.
- The Chick: Although she's more tomboyish than Katherine, she's the weakest of the Rangers.
- Deadpan Snarker: Almost rivals Kimberly and Aisha with her snappy comebacks, though while Aisha was more outspoken, Tanya is more articulate.
- Dual Wield: She was Zeo Ranger II and had that going for her a bit.
- Fighting with Chucks: Her signature weapon is a pair of Zeo Dual Nunchuks.
- Implied Love Interest: After breaking it off with Shawn, she and Adam are shown to grow closer and share a good number of their scenes together. It isn't confirmed as official, like with Kat and Tommy, but the subtext is there. A good example would be when Shawn gets together with an old nemesis of Aisha's and she brags about Shawn's flawless style of fighting, Tanya talks up Adam to them somewhat defensively, possibly inferring a relationship with the green ranger.
- Improbable Weapon User: Her Zeo Dual Nunchuks.
- Instant Expert: Despite having only become a Ranger in the last five minutes of Mighty Morphin', Tanya has no problem morphing or fighting with the others in the second episode.
- Kick Chick: Her morphed fight scenes mainly have her using kicks; a byproduct of the Ohranger footage, as that was Juri's fighting style.
- Naïve Newcomer: The least experienced on the team.
- Sassy Black Woman: Downplayed at least in comparison to her predecessor. Her real personality isnt too outspoken, but under King Mondo's hate plague she really takes it up a notch when insisting Kwanzaa is superior to the other celebrated holidays.
- Ship Tease: A relationship between her and Adam is hinted at throughout the series.
- Tomboy: Well, the most tomboyish female ranger up until that point.
- Tomboy and Girly Girl: Tomboy to Kat's Girly Girl.
- Younger Than They Look: It's bad enough her actress wasn't really a teen, but Nakia looked even older than her real age.
Rocky DeSantos / Zeo Ranger III
The second Mighty Morphin Red Ranger, Rocky found his Zeo Sub-crystal in Mexico as a child. After having his original age restored, Rocky became Zeo Ranger III - Blue.
Note: This section is only for tropes used in Zeo. For the rest, see the character sheet for Mighty Morphin' Power Rangers.
- Adaptational Comic Relief: Yuji certainly wasnt free from humiliation, but he definitely could run circles around the grief that Rocky endures here.
- Big Eater: He has a voracious appetite.
- Blade Below the Shoulder: His signature weapon is the Zeo Bladed Tonfas.
- Butt-Monkey: Rocky has the absolute worst luck. Throughout the series all manner of unfortunate things happens to him, starting with being demoted down to Blue Ranger, getting unfairly blamed for problems, nearly being turned into a plant by a monster created from a plant he'd accidentally created. It eventually reaches its apex in the transition between Zeo and Turbo when he's hospitalized.
- Characterisation Click Moment: In the previous series, Rocky was little more than a replacement meant to fill in for Jason as the Red Ranger and had no outstanding traits at least in comparison to his fellow replacements. This was largely due to Steve Cardenas' lack of acting experience which the man himself admits wasn't very good in his early tenure. Here, due to being able to emote more distinctively, Rocky is shown to have some comedic quirks that were otherwise not visible before and his civilian plots are more interesting to watch.
- The Everyman: In comparison to his more unique teammates, even the returning Jason, Rocky isn't much outside of his role as the Plucky Comic Relief. Unlike most examples in this franchise, he's all too aware of this and doesn't take it well.
- Heroic BSoD: Went through one in "Mondo's Last Stand" when he was convinced that Jason was replacing him.
- Hurricane of Puns: When he got turned into a plant in "A Few Bad Seeds." He also made some suggestive comments about Kat:Rocky: Nice leaves!Kat: I'm sorry? "Nice leaves?"Rocky: Yeah, nice leaves! Your branches aren't too bad, either.
- I Always Wanted to Say That: In "Invasion of the Ranger Snatchers," the Rangers are on horseback, and Rocky says "Let's head 'em off at the pass!"
- The Lancer: Properly this time. His comedic and goofy persona helps balance out Tommy, the almost perfect leader. That said, Adam is subtlely implied to have become the new second-in-command by the start of Zeo.
- Plucky Comic Relief: This is pretty much his role on the team now and he's not very happy about it.
- Sensitive Guy and Manly Man: Manly Man to Adam's Sensitive Guy.
- Small Name, Big Ego: In "Invasion of the Ranger Snatchers", Rocky gets a job as an extra in a sci-fi film and frequently tries to get himself hired as the lead, feeling his talents are wasted in his current position. He actually succeeds in replacing the lead actor at the end of the episode.
- Those Two Guys: With Aisha out of the picture, Rocky and Adam are seen together for the majority of their scenes. This is more prominent in the latter half of Zeo.
- Took a Level in Dumbass: In his earlier appearances, Rocky was considered fairly smart and mature. He even taught his own chemistry class. In Zeo his goofy tendencies have pretty much completely taken over his entire character.
Adam Park / Zeo Ranger IV
The second Mighty Morphin Black Ranger, Adam found his Zeo Subcrystal in North Korea as a child. After having his original age restored, Adam became Zeo Ranger IV - Green.
Note: This section is only for tropes used in Zeo. For the rest, see the character sheets for Mighty Morphin, and Turbo.
- Adaptational Personality Change: Adam is level-headed and introverted compared to Shouhei Yokkaichi.
- An Axe to Grind: His signature weapons are a pair of Zeo Hatchets.
- The Big Guy: He's still quiet and gentle but is seen practicing martial arts more often than any other character, and that's saying a lot on this show.
- Characterisation Click Moment: In Mighty Morphin', he was a quiet, shy nice guy as a way distinguishing himself from Zack. Johnny Yong Bosch claimed it was this season where he realized that Adam could be funny, so he became more sardonic.
- Deadpan Snarker: Johnny Yong Bosch claims that about halfway through this season (Power Rangers being his very first acting job) he figured out Adam could be funny.
- Genius Bruiser: He does martial arts and he is rather smart.
- Implied Love Interest: There's some subtext after Tanya breaks things off with Shawn that Adam may have started a casual relationship with her.
- The Quiet One: Talks the least out of the team.
- Sensitive Guy and Manly Man: Sensitive Guy to Rocky's Manly Man.
- Ship Tease: With Tanya.
- Those Two Guys: He and Rocky share a majority of their scenes, noticeable since Aisha left at the end of Mighty Morphin', no longer making it a ¡Three Amigos! dynamic.
Tommy Oliver / Zeo Ranger V
The Mighty Morphin Green and White Ranger, Tommy found his Zeo Subcrystal in a Native American Village as a child. After having his original age restored, Tommy became Zeo Ranger V - Red.
He now has his own page here.
Trey of Triforia / Gold Ranger I
When the battle between the Zeo Rangers and the Machine Empire was growing intense, a mysterious Gold Ranger appeared to help the Rangers out. While his identity was secretive, he was known as Trey of Triforia, a Triforian with three distinct personalities.
- Adapted Out: Originally, KingRanger had his own version of the Choriki Braces. The Gold Ranger just uses his Golden Power Staff as a Morpher.
- Age Lift: Riki, KingRanger in Ohranger, was a kid in suspended animation. Here, Trey is around the same age as the Rangers.
- All-Loving Hero: He will immediately ally himself with any heroes in danger, and comes to consider the Rangers as close friends after only meeting them half a dozen times.
- Bizarre Alien Biology: While he's a Human Alien, his species apparently has this, most obviously by being three different people in a single body that can split apart if things go wrong. This is a plot point, as the Gold Ranger powers are made for a Triforian's physiology rather than a human's, which is the cause of Jason's issues with the powers.
- Bling-Bling-BANG!: He's not the Gold Ranger for nothing with a golden shield and armbands.
- Bling of War: His chest armor is as bold as it is gold.
- Color-Coded Characters: An interesting variation. Unlike later Gold Rangers on teams without team uniforms, while he does have a lot of gold on him, the primary color of his outfit is still black, which DOES match the base suit of his powers.
- Hero of Another Story: He's the Gold Ranger defending the planet Triforia and his species are apparently interstellar peacekeepers.
- Literal Split Personality: Split into three different people: Trey of Heart, Trey of Wisdom, and Trey of Courage. And no, this isn't a reference to The Triforce. This is a racial trait: all Triforians naturally have three distinct personalities that can split apart if things go wrong.
- Magic Staff: The Golden Power Staff can fire energy blasts and allows Trey and the other Zeo Rangers to grow to giant size.
- Meaningful Name: Trey is a name meaning three.
- Red Herring: There were several people - including Billy, Skull of all people, and Tommy's brother David - teased as being the Gold Ranger's secret identity.
- Sixth Ranger: Subverted, in that he never actually joins the team, remaining an ally. According to his actors, this trope was intended to be played straight but never materialized.
- Stranger Behind the Mask: He never appears out-of-suit until the moment it is revealed that he is the Gold Ranger.
Jason Lee Scott / Gold Ranger II
The original Mighty Morphin Red Ranger, Jason left Angel Grove to go to the Peace Conference in Switzerland. However, when Trey was forcibly separated into his three personalities, Jason's friend Tommy came up to him to become a Power Ranger once again, and he became the second Gold Ranger.
Note: This section is only for tropes used in Zeo. For the rest, see the character sheet for Mighty Morphin' Power Rangers.
- Age Lift: Again, Riki was a kid, whereas Jason is a teenager.
- Bling-Bling-BANG!: He's not the Gold Ranger for nothing with a golden shield and armbands.
- Bling of War: A gold shield that takes up almost the entire torso.
- The Bus Came Back: And it somehow left Zack, and Trini back in that peace summit in Switzerland.
- Cast from Lifespan: The Gold Ranger powers are tied into Jason's life force, and so the Machine Empire do their best to wear him down, which causes his powers to start fritzing by the end of the series. It gets bad enough that Jason nearly dies. This is a result of Trey being a Human Alien with Bizarre Alien Biology, which makes powers made specifically for him not mesh perfectly with human biology.
- Color-Coded Characters: The first real subversion in the franchise, more than Trey. At no point does Jason ever wear any clothes that have even a hint of gold on them. The only gold on him at all times is his custom communicator. His outfits are primarily black or dark gray, the usual getup of a Black Ranger...which his Sentai counterpart is designated as.
- Deadly Upgrade: From a glance, the Gold Ranger powers are a lot stronger than the Red Ranger powers he once had, but as they were not made for an Earth human, they slowly drained his life force.
- He's Back: His return was easily one of the most memorable moments in the season and it's treated as such.
- Magic Staff: His signature weapon is the Golden Power Staff.
- My Greatest Failure: As he confesses to the team, the entire debacle of Tommy's kidnapping and brainwashing by Gasket brought back very bad memories that still haunt Jason to this day, from trying to save him from his original brainwashing to, in particular, the failure to save the Green Ranger powers. It drives him all the more to save his friend.
- Ship Tease: He sort of begins seeing a former biker girl called Emily in the later stages of Zeo. It's unclear if it goes anywhere beyond here, but if the ending of the season is any indication...
- Signature Move: Gold Rush.
- Sixth Ranger: Joins the team two-thirds into the series and remains with them up until the finale when the Gold Ranger powers are returned to Trey.
- Swapped Roles: Jason was the original MMPR Red Ranger and Tommy was the Sixth Ranger of the team. In Zeo, Tommy is the Red Ranger and Jason the Sixth Ranger. Jason makes it clear to the latter though that he has no intention of trying to reclaim his old role since he knows that the rangers will be in good hands with Tommy continuing the reigns. Indeed, even years later this holds true as it is still Tommy leading the team of ten reds on a mission whilst Jason maintains his role as a somewhat distant Big Brother Mentor.
- Time to Step Up, Commander:
- An interesting variation, as, despite now being The Sixth Ranger, he WAS the leader of the original team until Tommy became the White Ranger and is essentially Tommy's equal, so despite Rocky being The Lancer, when Tommy is kidnapped, Jason takes temporary command, as evidenced by him being the one to shout "Back to action!" with the full team.
- Incidentally, this trope actually causes some personal insecurity on Rocky's part when Jason rejoins the team. By the time of Tommy's kidnapping, Rocky had already been over it.
- Two First Names: Jason, Lee, and Scott can all be given names.
- Verbal Tic: Just like in MMPR, he finishes his sentences with "bro" and "man" when talking to the other men on the team.
- All There in the Manual: His family name is never spoken in-series but instead given in supplemental material.
- Artistic License Physics: "Negatively charged proton molecules"? Admittedly, most people think it's just an excuse to hide that something else is causing the power rejection.
- Brought Down to Normal: Due to the events of the Mighty Morphin' Alien Rangers miniseries, he's depowered, but still here.
- Character Development: In a continuation from his development in the previous series Billy has grown into an even more confident leader and serves as Zordon's Number One alongside Alpha. After graduating from high school, he basically serves this role full-time.
- Composite Character: Took from Dan of Zyuranger, Shōji of Dairanger, and Saizō of Kakuranger and in this season he also gains elements from Naoyuki Miura of Ohranger, though he shares the latter's position with Zordon by proxy.
- Demoted to Extra: Sort of. While he still got billing in the credits, he is no longer a Ranger here, just Mission Control.
- Missing Mom: His father was seen in a two-part episode back in Mighty Morphin' Power Rangers, but his mother is never brought up. He references his parents in plural terms in "Graduation Blues" to Cestro, inferring his mom's not deceased, so maybe his folks are divorced.
- Non-Action Guy: Justified, due to him stepping down from active ranger duty. One time in "Bulk Fiction", when the Cogs attacked him in the open, he attempted to flee despite his advancements in martial arts. Upon being restrained, Billy instead uses his remote toy car to misdirect the footsoldiers until they get tired and flee. Not exactly the best moment of his battle record.
- To be fair, it is often all-but-explicitly stated that fighting Cogs unmorphed is a bad idea; Billy may simply recognize that his old skills aren't much use against the threat posed by the Cogs without his old powers and simply choose to flee.
- Put on a Bus: In "Rangers of Two Worlds."
- Real Life Writes the Plot: David Yost has gone on record as stating he did not like the homophobia on the set directed towards him, and literally walked out and did not come back while they were filming the two-parter "King For A Day."
- Rapid Aging: Apparently the explosion of the original Command Centre messed with his molecules more than he thought (when combined with the fact he managed to re-age himself with a device back when the entire team became children last season) they aged him into an old man. Forcing him to have to go with the Aquitians homeworld to restore his youth. He winds up staying there when he falls in love with one of the female scientists and that is the last we see of him until Power Rangers Megaforce. Albeit as a Fake Shemp.note
- Red Herring: Was suspected by Rocky (and fans) to be the Gold Ranger. Tried to be said Ranger - but particles his body received from the Command Center's explosion rejected the power.
- The Smart Guy: A rare example where there is a Five-Man Band, but he's not in it.
- Bald of Awesome: Has no visible hair (eyebrows aside) and while unable to fight, he always comes through whenever the team needs help.
- Big Good: Just like previous seasons, he's the primary force of good in the series.
- Big Ol' Eyebrows: His eyebrows are highly visible and are the only hair he seemingly has. No one in-series ever comments on it though.
- Composite Character: As this season adapts Chouriki Sentai Ohranger, Zeo adds Naoyuki Miura to the Barza the Wizard and Daizyuzin/Master Kaku/Sandayū Momochi mixture that is Zordon.
- Decomposite Character: He shares Commander Miura's position of Mission Control with Billy with the latter being the one to create the advanced weaponry and handle the ground operations.
- Demoted to Extra: With Billy taking on the role of Mission Control, Zordon starts to feel redundant after a few episodes.
- Sealed Good in a Can: Sealed in a time warp by Rita Repulsa ten-thousand years before MMMPR.
- Amusing Alien: He is from Edenoi.
- Annoying Laugh: His Eheh eheh eheh... is still present and he does it a lot more here.
- Non-Human Sidekick: He's a robot sidekick to the Power Rangers.
- Robot Buddy: Again, just like previous seasons.
- Verbal Tic: "Ai yi yi yi yi!"
- Would Hit a Girl: By proxy. During the conflict with Prince Gasket and Archerina Alpha remote-controlled both the Red Battlezord and Super Zeo Megazord. While the ranger-piloted Zeo Megazord was going one on one against Gasket the Alpha piloted Red Battlezord was doing the same with Archerina. It should be noted that unlike the other two zords on the scene the Red Battlezord uses punches and kicks rather than weapons.
Auric the Conqueror
- Adaptational Dumbass: Buldont was able to deceive Gunmajin ultimately, but at least he voices some suspicion about the story and asks Buldont if he's just lying to get him to attack the Ohrangers. Auric, however, doesnt even consider that Sprocket is leading him on and goes to battle the Rangers before the group convinces him that hes in the wrong.
- Chuck Cunningham Syndrome: He was last seen in "Rangers of Two Worlds, Part 2" unsuccessfully facing the monsters controlling the Megazords. Unlike with Ninjor, the show didn't provide even the slimmest explanation of where he went afterward.
- Demoted to Extra: Most of his screen time in Ohranger was with non-suited actors that couldn't be used, so he was very little screen time in this series.
- Eenie, Meenie, Miny Moai: Auric's dormant form when he's not actively helping the Rangers.
- The Kid with the Remote Control: How he basically functions. While a sentient being in his own right, he can only be awakened and serves whoever possesses his key (as long as they're not evil and have a pure and just request).
- Make My Monster Grow: He's capable of making himself grow to giant size.
- Sealed Good in a Can: Is normally trapped in the form of a small tiki head with a keyhole in its forehead. Jason was given Auric's key to holding onto by Tanya.
- Suspiciously Similar Substitute: To Ninjor. Both are blue, mecha-like beings who serve as non-Ranger allies.
- Unwitting Pawn: Despite his honor and sense of justice, Auric is fairly easy to trick. When Louie Kaboom outright commands Auric to help him destroy the Earth, Auric absolutely refuses. But when Prince Sprocket starts crying and telling Auric of the evil beings known as the Power Rangers who are attacking the Earth, Auric immediately heads off to battle the "villains." His Sentai counterpart at least voices some suspicion that Buldont was lying, but not here.
- Ascended Extra: After three years of being a recurring character, Ernie was promoted to the main cast for Zeo. That said, he still doesn't get as many appearances as he did in MMPR Season One.
- Big Fun: He's overweight and a nice person.
- Non-Action Guy: He doesn't really do much in the way of fighting.
- Only One Name: We never find out his family name.
Farkas "Bulk" Bulkmeier & Eugene "Skull" Skullovitch
- Angrish: In the episode "Rangers in the Outfield", their argument becomes incomprehensible after Skull riffs on Bulk's less-than-stellar batting. It was so bad that Rocky had to scream louder than normal to get them to stop and even then it didn't last long. Baseball must bring out the worst in them.
- Badass Normal: In "King for a Day, Part II," they fended off Cogs, the mooks that Rangers preferred to fight while morphed.
- Butt-Monkey: Continuing from the last iteration, most of the time, nothing goes their way.
- Canon Foreigner: They have no Super Sentai counterparts.
- Determinator: Say what you want about all they've suffered, but they don't quit easily.
- The Dividual: Sure, they could appear separately, but it would fall flat. They feed off of each other so much that neither of them functions alone as a character.note
- Embarrassing First Name: Their first names are Farkas and Eugene which they don't use very often.
- Heterosexual Life-Partners: They're close friends of the same gender.
- Hidden Depths: Turns out that Skull is a classically trained pianist and a pretty damn good one at that.
- Irony: Them taking in Goldar and Rito as servants in the first half. After three seasons of usually fleeing in the face of danger, seeing them having power over said harbingers of danger is funny as hell to watch.
- Jerk with a Heart of Gold: They're arrogant and obnoxious even on the best of days, but they've proven on multiple occasions that they've got it where it counts.
- Plucky Comic Relief: They serve to provide comic relief.
- Red Herring: Believe it or not, Skull was inferred to be the Gold Ranger in a couple of episodes alongside more obvious candidates like Billy and David. Turns out that it's none of them.
- Those Two Guys: As always, they are (almost) never seen without each other. note
- Throw the Dog a Bone: At separate points, they both manage to score with a Girl of the Week. Bulk's was the daughter of the Angel Grove police chief while Skull's was a freaking supermodel, of all things.
- Took a Level in Kindness: While a little jerkiness remains in them, they've come quite a ways from where they were in MMPR Season One.
- Weirdness Magnet: Continuing from Mighty Morphin', they seem to have a knack for stumbling into enemy traps in increasingly convoluted ways. Special mention goes to "King for a Day", where they get sucked into a pocket dimension of Prince Gasket's where Tommy is being held.
Lieutenant/Detective Jerome Stone
- Ascended Extra: As with Ernie, Stone was promoted to the main cast after initially being a recurring character.
- Badass Normal: In "Graduation Blues," he stumbled upon Goldar and Rito - thinking an invasion was afoot. He chased them all over the park to try to arrest them. Granted, the two were amnesic and not up to no good, but Stone didn't know that.
- Hidden Depths: Stone turns out to have enough knowledge of coffee to write an entire book on the subject.
- Horrible Judge of Character: No matter how much they inevitably screw up, he never stops assigning Bulk and Skull to tasks.
- However, he does finally get wise by the end of the series.
- Jerk with a Heart of Gold: He's fairly abrasive and prone to shouting, but is otherwise shown to be a good guy. His last scene in Zeo has him getting mad at Bulk and Skull for ditching his detective agency to go to France but gains a look of forlorn once they make it clear they're leaving.
- Mean Boss: He switches between this and Benevolent Boss. He's prone to yelling and punishment, but of course, he's the boss of Bulk and Skull. Given their antics, anyone else would've fired them immediately, but Stone obviously has a soft spot for them.
- Must Have Caffeine: He knows so much about coffee, he's wrote a book on the subject. titled In the Know About Joe.
- Reasonable Authority Figure: While he does get angry and his subordinates more often than not, it's clear he has a soft spot for Bulk and Skull (just good luck trying to get him to admit it). It's very telling that when Stone gets canned in "Bulk Fiction", both of them decide to quit the force and join up with him to form a detective agency, implying that they've grown a deep respect for the man.
- Surrounded by Idiots: With Bulk and Skull as his main lackeys, this is pretty much par for the course. He becomes a tad more tolerant of them after forming his detective agency, but not by much.
- Chuck Cunningham Syndrome: David was never seen nor mentioned after Zeo. Tommy doesn't even bring him up in Legacy of Power. This is likely due to his actor being dead.
- Happily Adopted: He is the adopted son of Sam Trueheart.
- Long-Lost Relative: He is Tommy's long-lost brother.
- Magical Native American: Played straight in his first couple of episodes, namely that he can seemingly fade into and out of the wind. He notably does not think to use them when he's captured by the Machine Empire.
- Red Herring: At one point he was teased as a candidate for the identity of the Gold Ranger. Also, when Billy fails to take on the powers of the said ranger, Tommy says he has someone in mind who can. Before revealing it to be Jason, there's the implication that it might be David under the shades and bandana.
- Secret Keeper: David discovers Tommy is the Red Ranger during a plot by Mondo to steal the arrowhead. Unlike most examples in the Zordon era, this revelation doesnt result in David becoming a ranger himself at any point afterward.
- Sore Loser: David loses to Tommy in a sparring match which he doesn't take very well. His storming out of the Youth Center is what leads to him being captured by Cogs.
- Strong Family Resemblance: David has long hair just like Tommy.
- What Happened to the Mouse?: Even before the end of the season, David kind of just stops appearing after Oily to Bed, Oily to Rise which made him out as a candidate for the gold ranger. After the ranger is properly revealed, he is only mentioned once during The Joke's On Blue as an explanation for Tommy's main absence from the said episode (hes visiting David on the reservation) and is never brought up again, not even when Tommy is taken and brainwashed by the Machine Empire.
- Biker Babe: Had a history as one, but is strongly hinted to have been miserable during it.
- Friendless Background: Only Eddie, the leader of the gang she belonged to, ever gave her a chance at a good life, she says.
- Love at First Sight: Jason is immediately smitten with her, though it takes time for her to reciprocate. If the last episode is any indication...
- Official Couple: With Jason for a spell.
- Only One Name: We never learn her last name.
- Recurring Character: Appeared in nine episodes for this season and another one in the next.
- Better as Friends: He and Tanya have this epiphany by the end of his final episode.
- Jerk Jock: Is a baseball player and proves himself to be a poor sport when others make him look bad on the field. Especially if said person happens to be his girlfriend and proves to be a better pitcher than him.
- Not Cheating Unless You Get Caught: Nabbed a cheat sheet in his first appearance so that he won't get thrown off the baseball team. Tanya rightfully points out that he won't learn anything by cheating, which he admits later after he returns it to Mr. Caplan.
- Only One Name: As per usual for most of the Rangers classmates, Shawn's last name is never mentioned.
- Recurring Character: Appears in three episodes as part of an arc with Tanya.
- What the Hell, Hero?: Gets on the receiving end from Tanya when he tries to write off her winning the game as dumb luck. She tells him off for not being supportive and for his negativity before breaking it off permanently.
- Hero for a Day: In his debut, the anti-virus he developed to destroy the virus that Mean Screen unleashed is given to Adam (as Zeo Ranger IV) so that the rangers can put a stop to the said monster.
- Jewish and Nerdy: The Christmas Episode establishes that he celebrates Hanukkah and he (by '90s standards) knows his way around computers.
- Only One Name: His family name is not given.
- Recurring Character: He appears in three episodes in the season.
The ruler of the Machine Empire, King Mondo, and his family separated from the United Alliance of Evil so they could invade Earth.
- Adaptational Jerkass: Bacchushund would never act like a Jerkass to Buldont (in both forms) or chase him and Multiwa away from his castle.
- Adaptational Nice Guy: Mondo lacks some of Bacchushund's Bad Boss moments towards his monsters.
- Adipose Rex: Mondo's a big-built 'bot. On more than one occasion, Machina's dialogue suggests he's got the robot equivalent of blood pressure problems.
- Big Bad: The main antagonist of Zeo.
- Be Careful What You Wish For: When the Rangers first challenge him, he's happy to have a Worthy Opponent because Victory Is Boring. Needless to say, they prove far more formidable than he was counting on.
- Cross-Popping Veins: A fixed set of them are moulded onto King Mondo's faceplate.
- Cut His Heart Out with a Spoon: Downplayed. While he did once threaten to punish Klank's failure by making him "spend the next thousand years picking up scrap metal on the dark side of Alpha Centauri," he never followed through.
- Child Hater: He really dislikes human children.
- Crazy-Prepared: After falling to the Rangers, he had some unknown servants gather what was left, and was rebuilt by someone or something in a secret location that even his family didn't know about. Machina claims that it has happened before.
- Did Not See That Coming: He thought the Rangers would be an 'amusing distraction' from the boredom of relatively easy victories he'd been having. The fact they'd prove strong enough to fight back and eventually defeat him never occurred to him, and he's not so much fun when it happens.
- Fat Bastard: He's an overweight villain.
- Graceful Loser: At least most of the time, and especially compared to most other 'Zordon Era' Power Ranger villains where whenever the Rangers foil his plans, he usually just calmly declares that he'll defeat them next time. Though even that starts to crumble at times.
- Happily Married: To Queen Machina. The two spend a lot of their screen-time complimenting each other or exchanging cutesy nicknames with one another.
- Motive Decay: When the Machine Empire first attacked Earth, it's because "our solar system is the final link in a chain of galaxies already conquered" by them. Conquering Earth would effectively give them control of the universe (or at least enough of it to prevent any opposition). The Zeo Rangers were initially viewed as an "interesting diversion" to make the conquest more entertaining. By the end of the season, though, Mondo is more interested in defeating the Rangers. Possibly justified in that the Rangers repeatedly defeated him (including briefly destroying him), making it personal.
- Nonindicative Name: He's the king of the Machine Empire. Wrong title there.
- Noodle Incident: The last time he used the Damocles Sword. Whatever it was that happened, it resulted in him having to be rebuilt.
- Orcus on His Throne: Like any other Ranger Big Bad, he directs monsters against the Rangers. The trope is subverted, though, when he does fight the Rangers in "Mondo's Last Stand" and "Good as Gold." They wind up having no more trouble beating him than the average monster.
- Royals Who Actually Do Something: A villainous example, having fought the Rangers personally on more than one occasion. Although he's not much tougher than your average Monster of the Week.
- Spared by the Adaptation: His Ohranger counterpart didn't get rebuilt. Although his fate does catch up with him in In Space.
- Surrounded by Idiots
- The Starscream: Possibly since at the start of Zeo it's mentioned that the Machine Empire split off from the rest of the United Alliance of Evil and struck out to try and conquer the universe themselves implying that they intended to betray Dark Specter. Of course, by the end of the season, he's failed and forced to crawl back to the Alliance by the time In Space rolls around.
- Victory Is Boring: The Empire has been steamrolling everything in their path, so Mondo is happy at first to find a Worthy Opponent in the Rangers. It doesn't last.
- Villain Forgot to Level Grind: When he first fought Tommy at the start of the season Mondo easily wiped the floor with him. The next time he fought the Rangers together they destroyed him after accessing the power of the newly acquired Super Zeo Megazord. By the end of the season, the Rangers can defeat him without even having to use their Zords after being made big themselves with both Tommy and Trey delivering the finishing blow. Justified though since it was established that the Zeo powers get stronger over time.
- Villainous Breakdown: Whenever he really loses his cool, Mondo involuntarily shoots sparks from his ears and heavy steam emits from his crown.
- Villainous Valor: He has no qualms about personally fighting the Rangers or their Zords to the bitter end if need be.
King Mondo's wife.
- Adaptational Villainy: Her Ohranger counterpart Hysteria deeply cared about her family and eventually shows compassion and love, unlike the rest of the Baranoia Empire. Machina remains evil all throughout the franchise.
- Affably Evil: Unlike most villains in the franchise, she isn't prone to temper tantrums or rage, and rarely even raises her voice; indeed, if not for the content of what she says, one might not even assume she was evil.
- Child Hater: Much like her husband, Machina really doesn't like children, especially well-behaved ones.
- High-Class Glass: Wears a monocle on her left eye.
- Non-Mammal Mammaries: She's a robot with breasts, but not quite as noticeably as Archerina
- Oh, No... Not Again!: Her reaction to Mondo being blown up. Sprocket understandably questions this, causing her to reveal Mondo could simply be rebuilt.
- Orcus on His Throne: Despite being co-head of the Machine Empire, Machina never gets involved in a fight, and barely ever creates or even hires a monster. When Louie Kaboom takes over, she makes no direct effort to fight him.
- Parental Favouritism: Between Gasket and Sprocket, when the two are together, she prefers Gasket, snubbing Sprocket as "the baby" right to his face. Ironically, her husband has the opposite opinion.
- So Proud of You: Only not because of some accomplishment, but because Gasket and Sprocket are bickering with one another.
King Mondo and Queen Machina's youngest son.
- Adaptational Wimp: Since his older more powerful body is split into a different character.
- Bratty Half-Pint: He's a little kid, after all, so it makes sense that he lacks manners and tact. Most of his brattiness is directed at Klank.
- Decomposite Character: The two bodies of Prince Buldont from Ohranger become two separate characters with Buldont's Prince form going to Prince Sprocket.
- Glad I Thought of It: In some episodes, he's on either end of this where evil plans are concerned. In one case, he wants credit for his idea, doesn't get it, then blames Klank when things go wrong.
- Off with His Head!: Rita and Zedd's bomb blows Sprocket's head clean off (with his decapitated head being in full view when last seen).
- Spoiled Brat: He's a little robotic boy and clearly gets a kick out stealing credit for Klank's ideas and later blaming him for them going wrong despite himself. So, yeah...
- Uriah Gambit: His plan to get rid of Gasket was this, offering to use Klank and Orbus so they could fight the Megazord personally, (So the Rangers would cut them down and he'd be rid of them).
Klank & Orbus
Servants to the Royal House of Gadgetry, the two served as the Empire's monster enlargers.
- Adaptational Villainy: They never become good unlike their Ohranger counterparts.
- Bumbling Henchmen Duo: They're kind of like evil versions of R2-D2 and C-3PO as far as their attitudes towards each other are concerned.
- Catchphrase: Klank tends to say, "Around and around and away we / ye go!" when tossing Orbus at a monster.
- Big Guy, Little Guy: Klank is about the size of a human, Orbus is about the size of a cat.
- Deadpan Snarker: Orbus gets several digs in, usually at Klank's expense. Also, when making a monster grow, Orbus usually makes a quip somehow related to their powers.
- Expy: Klank is pretty much an evil Scottish version of C-3PO.
- Eye Beams: Fighting isn't their forte, but Klank has this when he has to. Well, beam singular, given as he has only one eye.
- Funny Robot: Most villain-originated humor on the show comes from their arguing.
- Make My Monster Grow: Klank throws Orbus at the fallen body of the monster of the day, making it grow.
- No Respect Guy: Both of them are rarely given their dues, especially Klank. Sprocket is always taking credit for their ideas (if not interrupting them outright) and any attempt of them insisting that the plan was their thoughts are shot down by Mondo when ordering their silence. Whenever the plan was foiled, Sprocket would quickly deny ownership of the plan and insist that it was Klank's fault for coming up with it, turning his father's wrath on the footman. Early on, they're both modified without consent to grow the Machine Empire's monsters.
- The Scapegoat: As mentioned above, whenever an evil plan was foiled, Sprocket would renounce all credit for stealing Klank's ideas and blame the failure on him, and Orbus on occasion, which sometimes resulted in Mondo smacking him around with his staff.
- What Happened to the Mouse?: They aren't shown during Zordon's Energy Wave so it's unknown if they survived.
To destroy the Machine Empire, Rita and Zedd created Louie Kaboom, a missile-themed robot monster, to infiltrate the Royal House of Gadgetry when it was at its most vulnerable. However, he soon broke away from their control and became the temporary leader of the Machine Empire.
- Adaptational Nationality: His Super Sentai counterpart was an exiled member of the Machine Empire. Here, he's a creation of Lord Zedd and Rita who took command of the empire.
- Alas, Poor Villain: You almost feel sorry for him, given how he anguished he was, pleading to Archerina (who clearly didn't care) to forgive him, right before he exploded.
- Beware the Silly Ones: Despite his personality, he's deceptively dangerous and competent. He's also stronger than Mondo was, as he manages to overpower the Super Zeo Megazord and force the formation of Super Zeo Ultrazord to kill him while the Super Zeo Megazord easily destroyed Mondo even with the Damocles Sword.
- Big Bad Wannabe: Sought to take over the Machine Empire (and win over Machina). He does succeed with the former, but his run only lasts a few episodes before Gasket and Archerina show up.
- Brooklyn Rage: He's got a distinct New York accent, likely to set him apart from the rest of the Royal House of Gadgetry.
- Character Development: He was a comedic villain at first, but after he rewired himself, his voice changes and becomes deeper. He also became more serious, more powerful, crueller, more intelligent, and more treacherous.
- Dies Differently in Adaptation: In Ohranger, Bomber the Great remained intact upon dying, with his true missile-like form being released to destroy the sun. In Zeo, Louie experiences the traditional Defeat Equals Explosion.
- Magitek: Like his creators Rita and Zedd, and unlike Mondo (who had to have his monsters constructed or created from pre-existing machines), he's capable of magically turning objects - including completely nonmechanical ones like a necklace - into monsters at will.
- Killed Off for Real: Was defeated in battle with the Super Zeo Ultrazord, and unlike most of the villains, never made a return. Justified, naturally, as it is doubtful Zedd or the Machine Empire wanted him around enough to rebuild him.
- Nice Job Fixing It, Villain!: Created by Lord Zedd and Rita to take over the Machine Empire in Mondo's absence. Of course, they almost immediately lost control of him.
- Smarter Than You Look: Despite his careless attitude and personality, he's surprisingly intelligent. His first act is to try and destroy his controller and failing that he simply rewires himself so it doesn't work anymore, and upgrades himself in the process. The one monster he puts genuine thought into making, the Midas Monster, is more well thought out (using humanity's own greed to feed it and make them destroy themselves) and dangerous than most of Mondo's (being the first monster that required every mecha in the Rangers' arsenal to actually beat).
- The Starscream: While usurping King Mondo's throne, he mispronounced everyone's name from the beginning. He also banished Machina and Sprocket three episodes later.
- Unwitting Pawn: Archerina turns him into this and sets him loose against the Rangers.
- The Brute: Despite his careless personality, he is about as strong as Prince Gasket and more powerful than Mondo was.
- Ungrateful Bastard: He ignores everyone's advice, including Klank and Orbus's sometimes, and decides to do things his own way.
- Vocal Evolution: In his first appearance, he initially spoke with a rather nasally, high-pitched voice. In his later appearances after he rewired himself, his voice became essentially like a less gravelly-voiced Ecliptor, but with a New York accent.
The oldest son to King Mondo and Queen Machina, Gasket was exiled after he married Archerina, daughter of one of Mondo's rivals. However, he was brought back by his mother to reclaim the throne and oust Louie Kaboom.
- Adaptational Jerkass: Buldont used to be The Bully and a Spoiled Brat until Bacchushund's death resulted with him becoming a more responsible and effective leader as Kaiser Buldont after his disastrous fight against Bomber the Great. Here, he's a Dirty Coward and has kid Buldont's personality.
- Adaptational Wimp: Kaiser Buldont is not only even more dangerous than his father or Bomber the Great but also became the replacement Big Bad and True Final Boss of Ohranger.
- Always Someone Better: He's this to Sprocket.
- Arc Villain: The main antagonist for a majority of the second half of Zeo, while his father is being repaired.
- Big Bad Wannabe: He sought to become the leader of the Machine Empire in King Mondo's absence, but failed to achieve any serious victories that would allow that ascension. Plus, he beat a hasty retreat after Mondo came back.
- Big Brother Bully: Sprocket clearly has bad memories that date back to before Gasket eloped.
- Bond Villain Stupidity: Oh brother, this guy successfully kidnaps Tommy and decides he's going to brainwash him to fight his team. As if that ever worked before. Eventually, he wises up and decides to do them in after they de-morph, but then it becomes clear it's too late to do so.
- Cain and Abel: With his little brother, Sprocket. Gasket openly declares his intentions to take Sprocket to pieces to his face, but Sprocket ultimately wins out by nearly tricking his brother into getting killed by the Rangers.
- Decomposite Character: The two bodies of Prince Buldont from Ohranger become two separate characters with Buldont's Kaiser form going to Prince Gasket.
- Demoted to Extra: He was the Final Boss in Ohranger.
- Dirty Coward: What he becomes when his dad finally decides to have a word with him.
- First-Name Basis: Every major villain will usually know the Rangers' names and tend to address them as such, but Gasket took it a bit farther. He refers to the Red Zeo Ranger not as "Tommy," but his actual first name ("Thomas").
- Hoist by His Own Petard: His Stable Time Loop plan is foiled because his previous plan to brainwash Tommy altered his brain and left him with a mild Ripple Effect-Proof Memory that let him realize the time loop was happening.
- Long Bus Trip: When Mondo finally cornered him, Gasket fled with Archerina and never returned.
- Real Life Writes the Plot: The costumes for both him and Archerina practically disintegrated. Some parts were salvaged for later use, but the complete suits were irreparable.
- Royals Who Actually Do Something: Unlike the rest of his family, he's not the type to sit on the sidelines.
- Spared by the Adaptation: His Ohranger counterpart just exploded instead of shrinking back down to normal size.
- The Starscream: His rather blatant attempt to gain the throne of the Machine Empire (even though Mondo has disowned him as heir) makes him one.
- The Unfavorite: Became this to King Mondo after he married Archerina, daughter of Mondo's sworn enemy.
- Unrelated in the Adaptation: In Ohranger, his and Archarina's counterparts were cousins, but since Power Rangers couldn't get away with incest, they were made into Star-Crossed Lovers from two rival families ala Romeo and Juliet.
- Warrior Prince: Unlike his father, he's not shy about fighting, and seems to never be without his weapon.
- "Well Done, Son!" Guy: Part of the reason he sought to become the leader of the Machine Empire was to prove that he was a worthy heir.
An archer themed robot and Prince Gasket's wife. She arrived with him after he was summoned by Queen Machina.
- Battle Couple: With Gasket.
- Boobs of Steel: Compared to the human girls Archerina's breasts are rather defined. She is also the strongest female character of the series when fighting by herself and often hands Kat's butt to her in a silver platter when battling.
- Dark Action Girl: Much like Gasket, she's very capable in a fight.
- Designated Girl Fight: With Zeo Ranger 1 Pink and always ends up kicking said ranger's butt.
- Disproportionate Retribution: She developed a grudge against Kat (the Pink Ranger) very quickly (even though the two had never previously met), simply because she detested the fact that there was another female warrior around who liked bows and the color pink. (That's right. This was a rare case where the villain was upset with the realization that she and the heroine might be Not So Different.)
- Fembot: She's a shapely robot woman who wears pink and casts love spells.
- Guys Smash, Girls Shoot: Zigzagged. Archerina does tend to use a bow and arrows in combat, but on occasion, she will use a sword as well.
- Lady of War: Even more so than Gasket and had at times fought alongside him.
- Long Bus Trip
- Love Potion: She has arrows that can cause the target to fall in love with her, as she did to Louie.
- Non-Mammal Mammaries: Despite being a robot, she probably has the biggest villain cleavage in the entire Zordon Era aside from movie era Divatox.
- The Rival: Views Katherine as her rival.
- Spared by the Adaptation: Same as Gasket, she was simply shrunk back to normal size while her Ohranger counterpart was destroyed.
- The Straight and Arrow Path: Her Weapon of Choice; she has arrows that explode and others that act as a Love Potion.
- Stripperific: For all intents and purposes, she was a robot wearing metal lingerie, complete with lace trim.
- Unrelated in the Adaptation: Her Ohranger counterpart Princess Multiwa is Machina's counterpart Hysteria's niece. In Zeo, she's only related by marriage.
- Uriah Gambit: She clearly had this in mind when she made Louie fall in love with her and told him to go after the Rangers, although she hoped he could take them out too.
- The Vamp: She can trance men with her love arrows and make them carry out her every wish. This is possibly only effective on other robots, but she never used her love arrow on any flesh and blood characters, so it was never proven either way.
CogsMechanical servants who serve as the foot soldiers of the Machine Empire.
- Blade on a Stick: They wield spears with an electric charge tip.
- The Bus Came Back: A group of them returned for Wild Force in Forever Red.
- Mooks: For the Machine Empire.
- No Water Proofing In The Future: In one episode, one of them gets tossed in a lake and explodes spectacularly.
- Space Fighter: They have their own space ships called the Quadrafighters.
- Adapted Out: Bara Nightmare and Machine Beast Tamer Keris are two of the Ohranger monsters not to be adapted. Bara Brain was also not adapted, but his explanation is down at Staroid's section.
- Demoted to Extra: Bara Police only made an appearance in the Zeo video game under Bara Cop.
- Adapted Out: In Ohranger, Staroid was a mindless drone operated by a smaller robot named Bara-Brain. However, Bara Brain was not adapted due to being around the Japanese cast too much.
- Adaptational Early Appearance: Bara Seperate appeared in the sixth and seventh episodes of Ohranger. Here, he is the first monster the Zeo Rangers fought against.
- Adaptational Intelligence: His Ohranger counterpart didn't talk compared to him.
- Battle Boomerang: Has a Star Boomerang, which is a form of destructive energy from his top point.
- Healing Factor: If destroyed, his metal sphere can attempt to reform himself. Unfortunately for him, the Rangers did not give him that option.
- Suicidal Overconfidence: Staroid running towards the Zeo Megazord after brandishing its saber was just asking for trouble.
- The Worf Effect: While he was able to put the Zeo Zords on the fence, he struggled against the Zeo Megazord.
- Adaptational Early Appearance: Bara Missiler appeared in the eighth episode of Ohranger. Here, he is the second monster the Zeo Rangers fought against.
- Arm Cannon: Has two missile launchers on his wrists.
- The Brute: Despite being an early monster, Silo proved to be a tough opponent to beat.
- The Bus Came Back: One of the monsters that came back in A Golden Homecoming.
- Came Back Strong: In his second appearance, he was upgraded with Neo Plutonium, making him able to No-Sell the Rangers' entire arsenal. It was only with the aid of his new Super Zeo Zord that Tommy was able to destroy him for good.
- Combat Tentacles: In the form of chains. Silo used these to grapple the Zeo Megazord.
- Near-Villain Victory: He had the closest of all the Zeo monsters by sending the Zeo Megazord to the sun. And he was only the second monster of the season!
- Verbal Tic: Seems to like starting a sentence with a question. Justified as the video game used to create him was being turned into an edutainment game.
Boohoo the Clown
- Battle Baton: Wields a Clown Baton that fires multiple beams.
- Mad Bomber: Wields explosive baby bottles.
- Monster Clown: Of the robotic kind.
- Improbable Weapon User: Some of his arsenal included a rattle and baby bottle bombs.
- Sensory Overload: Can afflict this to his opponents, primarily to a baby.
- Adaptational Species Change: From a vacuum cleaner to a pitching machine.
- Arm Cannon: Has one that can shoot baseballs.
- Ironic Name: For a monster called People Pitcher, he never really tossed anyone around.
- Shapeshifting: Can turn from an ordinary pitching machine into a monster.
- Weapons That Suck: Oddly enough, for a pitching machine-based monster, he has this ability. Admittedly, this was leftover from Ohranger as he was known as Bara Vacuum there.
- Break the Cutie: Attempted this on Kat (fitting as he spent a good amount of time targeting specifically her). Somewhat interestingly it is possible that if her friends didn't find her in time it might have worked, though in all fairness she might have been destroyed not too long afterwards.
- Improbable Weapon User: His jackhammer. Not just for digging up magma, but could also be used as a sword.
- Mad Bomber: Carries some grenades on him. To detonate them, he has the little robot on his head push down on the levers.
- Mini-Mecha: Seems to be this as he is fully controlled by a smaller version of himself on top of his head.
- Would Hit a Girl: Throughout his episode, he effectively terrorized Kat the Pink Ranger, took advantage of her twisted ankle, generally bullied stalked and harassed her, and generally picked on her even when she morphed due to her said ankle being a hindrance in battle. In their 1 vs 1 battle Kat's gender nor injuries made him take it easy on her.
- Adaptational Nice Guy: Unlike his Ohranger counterpart, Puppetman was a good robot until the Machine Empire got a hold of him.
- Attack Its Weak Point: As discovered by Billy, Puppetman grows weaker when its nose is cut off.
- Brainwashed and Crazy: Not only was he turned evil by King Mondo, but he could brainwash kids into wreaking havoc.
- Deadly Disc: The pair of buzzsaws on his shoulders are not for decoration. Puppetman can fire them at his opponents.
- Spared by the Adaptation: Even though he was trashed after the Megazord fight, Billy and Alpha were able to repair him in time for his next show, with a deflector signal to prevent anyone from ever brainwashing him again.
- The Bus Came Back: Would return in King for a Day.
- Non-Action Guy: He does not fight against the Rangers.
- Adaptational Badass: While his Ohranger counterpart's mission of distributing a diet drink that turned people into ravenous Big Eaters was pretty dangerous, here, Leaky Faucet was tasked with polluting all the world's water with toxic cog oil.
- Adapted Out: His Super Sentai counterpart was able to disguise itself as a human. He had no such ability in Power Rangers.
- Beware the Silly Ones: He might be the silliest looking monsters in Zeo, but he was also a tough opponent.
- The Bus Came Back: Would return in Oily To Bed, Oily To Rise where he was the main antagonist.
- Came Back Strong: In his second appearance, he had been rebuilt into a more dangerous version, being able to turn into liquid and release toxic oil from his glands.
- Flat Character: Subverted. Unlike the other monsters in Invasion of the Ranger Snatchers that were used to create Bucket of Bolts, he did have a personality when he came back.
- Making a Splash: He has a lot of water-based attacks.
- Tube Travel: Can traverse through Angel Grove's plumbing, where he excretes his toxic oil from his glands.
- Flat Character: Only exists to fuse with the others into Bucket of Bolts.
- Flat Character: Only exists to fuse with the others into Bucket of Bolts.
- Flat Character: Only exists to fuse with the others into Bucket of Bolts.
Bucket of Bolts
- Disney Villain Death: Unusually, he was not defeated with a finishing move, but the Rangers causing him to fall to his death.
- Fusion Dance: Was created by fusing the four monsters above him.
- Shapeshifting: Can turn himself into a locomotive.
- Adaptational Heroism: The rest of his race had made peace with the Aquitarians.
- Adaptational Nationality: His Ohranger counterpart was part of the Machine Empire Baranoia (the Machines Empire in the aforementioned Sentai), but in Power Rangers, he's split into his own alien race. He never even heard of the Machine Empire before coming to Earth.
- Invisibility: He can turn invisible.
- Villain Team-Up: He came to Earth with his own goal, but agreed to work with the Machine Empire in destroying the Power Rangers.
Adrian and Pollenator
- Bash Brothers: At least in their debut fight.
- Dies Differently in Adaptation: Pollenator was taken down by the Rangers Zeo Laser Pistols. In Ohranger, he was taken down... brutally.
- No Celebrities Were Harmed: Pollenator's voice is clearly a Rocky Balboa/Sylvester Stallone impression. It's driven home even further when he calls out his cousin's name. Adrian himself is seemingly in the vein of Arnold Schwarzenegger, though its somewhat inconsistent.
- What Happened to the Mouse?: Adrian disappeared after Pollenator went down to defeat the Rangers himself. We never know what happens to him (his Ohranger counterpart died from dissection by the Machine Empire. Power Rangers obviously could not use that footage).
- Antagonist Title: Mean Screen.
- Blade Below the Shoulder: Wields two blades on his arms.
- Combat Tentacles: Has these in the form of computer cables.
- Computer Virus: The main reason he was sent down was to infect the Rangers arsenal and make them weaker.
- Power Copying: Has the ability to copy his opponent's powers and use it against them.
- Adapted Out: Bara Crusher had the ability to possess people through a mechanical bug. This was never used in Power Rangers.
- Blood Knight: Mechanizer didn't care about a reward Klank offered him. He just wanted to cause destruction.
- The Bus Came Back: One of the monsters that came back in A Golden Homecoming.
- What Happened to the Mouse?: His last appearance was in an exploding warehouse. It is unknown whether or not he survived or the one from Golden Homecoming is a replacement.
- Adaptational Dumbass: While Bara Printer was tricked into zapping his own reflection with his love ray, Robocupid actually mistook her reflection for a "gorgeous woman".
- Cupid's Arrow: Her main ability is to cause people to fall in love with the first appliance they see.
- Demoted to Extra: Her counterpart Bara Printer got his own focus episode. Robocupid was one of two monsters in "No Business Like Snow Business", the other being Defoliator. Although, it was a three-parter.
- No Ontological Inertia: As with other cases, her destruction undid her spell that made humans fall in love with machines.
- She's a Man in Japan: Her Ohranger counterpart is male.
- Adaptational Badass: Surprisingly, his Dies Differently in Adaptation makes him tougher than Bara Darts.
- Beware My Stinger Tail: Being a scorpion-themed robot, he naturally has this.
- Demoted to Extra: While his counterpart Bara Darts got an episode all to himself, Defoliator shared the episode "No Business Like Snow Business" with Robocupid. Although, it was a three-parter.
- Dies Differently in Adaptation: Oddly enough, Defoliator was first taken down by the Zeo Megazord, and then permanently destroyed on the ground battles when in Ohranger, it was the other way around.
- Green Thumb: Subverted. He destroys plants to enhance the greenhouse effect.
- Made of Iron: More than literally, as he's the only monster in all of Zeo to actually survive a Megazord fight.
- Power Pincers: Has one on its left arm.
- Adaptive Ability: As he absorbed more energy, his body grew more spikes.
- Arrogant Kung-Fu Guy: Very arrogant in his abilities.
- Combat Tentacles: Uses one to siphon power.
- Energy Absorption: His main ability.
- The Worf Effect: He was able to handle against the Zeo Megazord, but once Tommy got full control of the Red Battlezord, well bye-bye Main Drain.
- Wounded Gazelle Gambit: In the middle of his fight against the Zeo Megazord, he decided to give up and surrender. However, it turned out to be a trap for the Rangers to drain the Megazord's energy. It also helped as the Rangers suddenly grabbed the Idiot Ball at that moment.
- An Ice Person: He has an ice breath, which can cover a cockpit area with ice.
- Bare-Fisted Monk: He's a boxing-themed monster that uses his fists.
- Drop the Hammer: For some reason, he has one.
- Meaningful Name: Being a boxing monster fits his name.
- Power Fist: For his second battle with the Red Battlezord, his gloves were enhanced with spikes.
- Hyper-Destructive Bouncing Ball: He can turn into a spikey ball and roll towards his opponent.
- Made of Iron: He has very durable armor that not even the Red Battlezord could breakthrough. It took the newly created Zeo Mega Battlezord to finally breakthrough.
- Wolverine Claws: Has these in place of weapons.
- Adaptational Nationality: As with the Hydro Contaminators, Autochthon was not under the Machine Empire like his Ohranger counterpart.
- All Webbed Up: Is capable of shooting strings from either his mouth or hands to tie up his enemies (leftover from Ohranger as he was known as Bara Clothes).
- Demoted to Extra: Shared his single episode appearance with Mace Face.
- Shock and Awe: He can fire multi-colored electricity.
- Adaptational Dumbass: Bara-Revenger was a lot more philosophical.
- Adaptational Villainy: His Ohranger counterpart was actually against the Machine Empire and was only forced to attack the Rangers due to Acha (Klank's Sentai counterpart) remote controlling him. Defector in Zeo is nothing like him.
- Dies Differently in Adaptation: In Ohranger, after being freed from the Machine Empire's control, Bara-Revenger went off to fall apart in a junkyard. Defector was immediately destroyed when Rocky struck him with the Defender Wheel.
- Fake Defector: His main goal was to trick the rangers into thinking he was defecting from the Machine Empire.
- Ironic Name: Defector's name comes from someone who defects from a previous allegiance. While that's true in Ohranger, it is not the case in Power Rangers/
- Adaptational Late Appearance: His counterpart Bara Drill was actually the first monster to appear in Ohranger.
- All Just a Dream: Downplayed. While he did appear in Adam's dream, he returned for A Golden Homecoming. However, it's unknown whether King Mondo created him just then or had him fight against the Rangers off-screen.
- The Bus Came Back: One of the monsters that came back in A Golden Homecoming.
- This Is a Drill: He has a massive one on his torso.
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- Beware the Silly Ones: Despite his goofy appearance, he proved to be a formidable opponent.
- Dies Differently in Adaptation: His Ohranger counterpart turned into an angel after being defeated. Here, he explodes like any other monster.
- Adaptational Species Change: Wrecking Ball's Ohranger counterpart was based on a kendama (a Japanese skills toy). Since a toy like that would not be well known for the American audience, he was instead changed into a wrecking ball-themed monster.
- Epic Flail: He wields a giant wrecking ball.
- Adapted Out: His Ohranger counterpart had a human disguise. Abominator had no such ability.
- Adaptational Species Change: His Ohranger counterpart was dressed in a Napoleon-style outfit due to having a thing for nostalgia. Here, he's changed to a marine admiral.
- Talk Like a Pirate: Most of his dialogue involves words like "brig", "shanghai" and "Walk the Plank".
- Villains Want Mercy: His last words are "No, please!" The Rangers scrap him anyway.
- Adaptational Intelligence: His counterpart Bara Goblin only grunted and growled, whereas Wolfbane can talk.
- Adaptational Species Change: His Ohranger was a goblin while in Power Rangers, he was changed into a werewolf.
- Ironic Name: His name is based on a flower that wolves don't like.
- Our Werewolves Are Different: A cyborg werewolf monster.
- Wolverine Claws: Has theses in place of weapons.
- The Worf Effect: In both the ground battle and zord battle, he bested the main five Rangers, but lost to the Gold Ranger.
- All Webbed Up: Can fire a chain metal version of the trope, that also has Shock and Awe abilities.
- Oh, Crap!: All he could do against the Zeo Ultrazord was shake in fear.
- We Hardly Knew Ye: He didn't get as much screentime as his Ohranger counterpart.
- Adapted Out: Somnibot had a third form in Ohranger (in between the two other forms). It was not used in Power Rangers due to the footage used featuring car accidents and vehicular manslaughter.
- Came Back Strong: After getting trashed by the Gold Ranger in their first fight, Klank repaired her into a stronger form that even the Gold Ranger had some difficulty with.
- Hoist by Their Own Petard: Humorously, even she can get affected by her singing.
- She's a Man in Japan: Her Ohranger counterpart was a male.
- Adaptational Nationality: As with the Hydro Contaminators and Autochthon, the Varox were not under the Machine Empire like their Ohranger counterpart.
- Dig Attack: Showcased this in the Megazord battle.
- The Worf Effect: One Varox, Borax, easily deals with the Gold Ranger, but has trouble with the other Rangers and is subsequently defeated by the Zeo Megazord.
- Villain Team-Up: He came to Earth to steal the Gold Ranger's powers when King Mondo approached him, offering to let him have the Zeo Rangers' powers if he helped defeat them, which he agreed with.
- Adaptational Late Appearance: His counterpart Bara Saucer actually made a previous appearance before returning, being the second monster to appear in Ohranger. However, due to the violent footage featuring him depicted, it couldn't be adapted for the kid-friendly Power Rangers.
- Combat Tentacles: Has wirey tentacles that grabbed Super Zeo Zord 3.
- Flat Character: Unlike the other three monsters, who had appeared in previous episodes, there was nothing remarkable about Hosehead.
- We Hardly Knew Ye: Gets the least amount of screen time out of all the Ohranger monsters.
- Blade Below the Shoulder: Sported a tusk in the place of his left arm.
- War Elephant: Based on an elephant as part of his Animal Motif.
- Adaptational Wimp: His Ohranger counterpart had stronger powers as he could use the garbage on Earth to create atomizing gas. Here, he can only create a stink gas. That's it.
- Smelly Skunk: A robotic smelly skunk.
- Adaptational Intelligence: He was able to talk in contrast to Bara-Gold, who only grunted.
- Defiant to the End: Give Midas some credit. Unlike most monsters where the appearance of the Zeo Ultrazord resulted in an Oh, Crap! moment, he refused to give up and charged against the Megazord. Sadly, it became a moment of Suicidal Overconfidence.
- Demoted to Extra: Midas Hound only appeared in one episode, as opposed to Bara Gold who appeared in two episodes of Ohranger.
- Godzilla Threshold: Due to his abilities that can turn anything into gold, the Rangers had to use a good amount of their zord arsenal to defeat him.
- Gold Makes Everything Shiny: A gold-colored monster.
- Midas Touch: With his beams, he can turn anything and anyone into gold. Poor Jason can attest to the latter.
- Battle Boomerang: His main weapon.
- Blade Below the Shoulder: Can project small blades out of his wrists to slash and stab his enemies with.
- Irony: He called Jason a second-rate leader, not knowing that Jason was the original leader of the Mighty Morphin team.
- Making a Splash: Can spray a hazardous water-like substance.
- Oh, Crap!: All he could do was mutter "This can't be good" when the Super Zeo Ultrazord was created.
- The Worf Effect: He could handle the Super Zeo Megazord, but was wiped out when it combined with the Red Battlezord and Pyramidas.
- The Artifact: His appearance invokes more of the Gold Ranger's appearance than the Red Ranger's. In Ohranger, he was designed to look like the Gold Ranger to trick the Rangers into thinking that their Sixth Ranger turned evil.
- Dies Differently in Adaptation: He was defeated by King Pyramidder Carrier Formation in Ohranger, while Jason defeated him with his own staff in Power Rangers.
- Hoist by Their Own Petard: Was killed by his very own staff.
- Adapted Out: He had a human form in Ohranger that was never used.
- Dashingly Dapper Derby: He's got a bowler hat on his head, which is a remnant of his Ohranger counterpart's conman theme.
- Meaningful Name: His name is Protectron, and he was protecting an important item.
- Blade on a Stick: Wields a spear that can fire dark orange-colored energy streams.
- Luckily, My Shield Will Protect Me: Has a shield.
- The Worf Effect: He could handle both the Super Zeo Megazord and Warrior Wheel, but Auric was able to destroy him with one sword slash.
- Adaptational Wimp: In addition to his Dies Differently in Adaptation, his Ohranger counterpart was the one that enabled the Machine Empire to conquer the earth. Here, he's just a run-of-the-mill monster.
- Dies Differently in Adaptation: In Ohranger, the King Ranger's (Gold Rangers Sentai counterpart) friend Dorin destroyed him by using a powerful crystal. In Power Rangers, Jason destroyed him with Pyramidus.
- Made of Iron: He was a strong monster that not even the Red Battlezord and Super Zeo Megazord could make a scratch on its body.
- No Ontological Inertia: For some reason, destroying him freed Tommy and Tanya from the singing spell they were under.
- Adaptation Explanation Extrication: In the sentai, there is actually a reason why she's so tough; she's a magic-based Kakuranger monster and is thus immune to the Ohranger's technology-based weapons.
- Beware the Silly Ones: Yeah it looks ridiculous, but Impursonator proved to be the strongest monster Rita ever created.
- Energy Absorption: She absorbs the energy from any attack she takes and converts it into extra power for her thunder bolts.
- Fusion Dance: Fused with Cog Changer in a last-ditch effort.
- Nigh-Invulnerability: Her blubbery skin and energy-absorbing powers let her No-Sell practically everything thrown at her. Even the Zeo Ultrazord did little damage to her.
- She's a Man in Japan: Her Ohranger counterpart was a male.
- Blade Below the Shoulder: Has a buzzsaw on his left arm.
- Fusion Dance: Fused with Impursonator in a last-ditch effort.
- Made of Iron: He was able to take a hit from the Zeo Power Cannon, but he was still knocked down and needed to be gigantified.
- Swiss Army Weapon: His cogs could function in many different ways from upgrading the Cogs, using them as bombs, or taking over machinery.
- Technopath: Cog Changer's main ability is to use cogs to control local machinery. He even used them to hijack the Zeo Megazord.