- The Ageless: He was guarding the map to the Omega Lock for well over 1,000,000 years prior to the start of the series. And considering the fact that he's a Transformer, he's not going to be dying from age anytime soon.
- Ascend to a Higher Plane of Existence
- Badass Boast: He does one, for the last time:Vector Prime: They were destroyed because I left them... No! This will not stand. I am a keeper of space and time. I can see through time. I will travel through time. I can change time. I will change time!
- BFS: Vector Prime owns a very impressive looking sword.
- The Comically Serious
- Cool Old Guy
- Fish out of Temporal Water
- Heroic Sacrifice
- Sealed Good in a Can: He held a map that could lead to the Cyber Planet Keys within him for a few centuries, until it got stolen...
- The Stoic - Not So Stoic: Perhaps best exemplified in episode 15.
- "Where Are They Now?" Epilogue: As seen in the credits of the second-to-last episode of the series, his spirit continues to fight the spirit of Galvatron in the afterlife.
- Animal Motifs: If look closely you can see he sports little fangs, this becomes much more pronounced after he becomes Leobreaker.
- Boisterous Bruiser
- Emergency Transformation: He became Leobreaker while trying to protect Snarl.
- Guttural Growler
- Meaningful Name: The word "overhaul" means to take apart a machine and make the necessary changes and repairs. Overhaul's entire arc is about recognizing the flaws within himself as a person and this also works on a literal level as he is rebuilt as a different type of Transformer entirely.
- Panthera Awesome: His alt mode as Leo Breaker is a lion.
- Took a Level in Badass
- Came Back Strong: After a run-in with Megatron that resulted in him, Hotshot, and Red Alert being nearly torn apart by the former's new Cyber Key-based machine gun, he gets an upgrade that greatly increases his strength and firepower.
- Dub Name Change: In Galaxy Force, his original name was Backpack, while his "Cybertron Defense" form was named Backgild.
- Plucky Comic Relief
- Southern-Fried Private: Much like the Decepticon Thundercracker.
- Took a Level in Badass: After his "Cybertron Defence" upgrade.
- Tank Goodness: Both his original and "Cybertron Defense" forms use a tank as an alt-mode.
- Action Girl
- Cute Bruiser
- Cool Big Sis: In the dub, she eventually becomes this to Lori.
- Cool Car: Her alt mode is a futuristic sports car.
- Jerk with a Heart of Gold: In her early appearances at least. She loses her jerk streak once Hotshot beats her in the final race for the Planet Cup and joins the Autobots full-time afterwards.
- She's a Man in Japan: In the Japanese version of the show, Galaxy Force, she was the male leader of the Speed Planet transformers named Nitro Convoy. This was changed for the English dub, however, to add a stronger female presence to the main cast.
- Super Speed: As the leader of the Speed Planet's transformers, she is considered to be the fastest racer on the planet. At least, she is considered this until Hotshot comes along and beats her in the competition for the Planet Cup.
- Intergenerational Friendship: With Clocker.
- Just a Kid
- Robot Kid
- Teens Are Short: He may not be an actual kid, but he is absolutely tiny compared to the other bots, other than the Mini-con's anyway.
- Animal Motifs: He has a Rhino ault mode.
- Badass Pacifist: He does not like to fight, that's not to say he can't.
- Minored in Ass-Kicking
- Animal Motifs: The the three headed dragon variety.
- Big Ego, Hidden Depths
- Breath Weapon: The two dragon heads deployed by his Cyber Key breathe fire.
- HeelFace Revolving Door: He starts as an ally of the Decepticons, then sides with the Autobots after being defeated by Savage Claw Mode Optimus. Then he becomes a full-fledged Decepticon to aid Megatron after Starscream turns against him. He finally settles with the Autobots on Gigantion when Snarl and Leobraker make him question his motives.
- Proud Warrior Race Guy
- Well-Intentioned Extremist: All Scourge ever really wanted was to end the violent wars on his planet and bring peace and stability to all, he just went about it the wrong way.
- Demoted to Extra: How long did it take for him to stop doing anything? Four episodes?
- Guile Hero
- Protector: While not as proactive as Crosswise, he's always tried to look out for us little guys.
- An Axe to Grind: Wields an axe that is about same size he is; said axe forms the excavation equipment of his vehicle mode.
- Awakening the Sleeping Giant: Before the Autobots arrival Metroplex was only ever interested in building things. After the Decepticons start making a mess, he takes action.
- The Big Guy: Towers over even the other inhabitants of Planet Gigantion.
- Brave Scot: Speaks in this accent.
- Dub Name Change: In the Japanese Galaxy Force, his name was Megalo Convoy. For the dub, his name was changed to Metroplex, referencing his previous incarnation as the massive city-sized Transformer in Generation 1.
- Humongous Mecha: His battle mode is incredibly massive, towering over most of the non-planet-sized transformers in the series.
- I Call It "Vera": His axe is named "SparkDrinker".
- The Worf Effect: The most egregious example among the Transformer characters, in BOTH the giving and receiving end of this trope. His debut appearance had him singlehandedly fend off Scourge and the other Decepticons, easily defeat Megatron Dark Claw Mode, destroyed Megatron's Nemesis Breaker upgrade, and left Megatron badly injured. In the NEXT episode, Megatron upgraded into Galvatron and defeated Metroplex almost instantly.
- Adaptation Personality Change: From more honourable and reserved veteran, to Trigger Happy grunt.
- Axe-Crazy: Downplayed compared to Megatron, who is completely nuts, but he's basically the new version of Cyclonus.
- Butt-Monkey: Having the worst boss ever doesn't help. He gets lit on fire by Scourge twice. ("Would somebody please put me out?") At the end, after Ransack, Crumplezone, and Thunderblast go back on their Heel Face Turns and sneak off in homemade rocket, poor Thundercracker gets shanghaied aboard when goes to investigate. The Hasbro version of his toy's mold was a major-league example of quality-control failure. (PRIMUS DAMNIT HASBRO!)
- Chekhov's Gunman: Starscream name drops him in Armada.
- HeelFace Turn: Well... he tried to go Autobot... but his Decepticon buddies wouldn't have it.
- Hidden Depths: In a battle that occurs very late into the series, he actually unleashes an ace-in-the-hole attack for which he got his namesake, and unlike all the other times he's been played for a joke, this is him fighting serious.
- Imperial Stormtrooper Marksmanship Academy: He generally cannot aim properly. His general "solution" for this is More Dakka, which still doesn't help.
- Not-So-Harmless Villain: When he busts out the most powerful move in his arsenal and for the briefest of moments stops being a Joke Character.
- Southern-Fried Private: Speaks with a Southern US accent and happens to be one of Megatron's underlings.
- Trigger Happy: He loves to shoot things... although his aim is piss poor and he misses a lot.
- Beware the Silly Ones
- Butt-Monkey: Perhaps more so than his partner Crumplzone.
- Pintsized Powerhouse: Ransack's small but is a surprsingly strong soldier.
- Plucky Comic Relief
- Beware the Silly Ones
- Butt-Monkey: Quoth Crumplezone:
- "When he [Optimus] sees our real strength and feels our vengeance, he'll regret beating us over and over and over and..."
- The Brute
- Mid-Season Upgrade: After suffering massive damage. The shade of Megatron appears and saves the dying bot's life. Megatron also reformats the guy, giving him a newer, darker look as well as an upgrade in firepower. Although it doesn't really save him from his role as a Butt-Monkey...
- Plucky Comic Relief
- Took a Level in Badass: Subverted. Despite his mid-season upgrade and a couple of good shots that could be considered Hope Spots, he goes back to being a Butt-Monkey for the rest of the series.
- Boobs of Steel
- Card-Carrying Villain: She may never out right state that she enjoys being evil, but she never needed to.
- Dark Action Girl
- Dub Name Change: Known as "Chromia" in Japan. It was most likely changed in America to avoid confusion with the G1 Autobot of the same name.
- Jerkass: Towards Lori when they meet in Ambush. Not that she's much more pleasant to anyone else.
- Ms. Fanservice: Parodied Trope through the combination of the above two.
- The Smurfette Principle: Played straight in both the Japanese and English dubs, as she's the only female Decepticon character to appear. The Japanese dub, however, takes this further by having her as the only major female character, since Override was the male Nitro Convoy in that version of the show.
- Big Brother Instinct: Towards Bud.
- Last Minute Hookup: He's become Lori's boyfriend by the last episode and proposes to her in the epilogue, with the last photograph shown being of their wedding.
- Playful Hacker: Once used this tech skills to trick Sideways into thinking he was speaking to Megatron via hologram."Now hop on one foot and say, I'm a pretty lady!"
- Took a Level in Badass: He repairs a Mook Decepticon and makes it into his own personal fighting robot, to help him fight alongside the Autobots. He makes good use of it.
- Tagalong Kid: Being the youngest of the three.
- Action Girl: She proved her chops by blasting Thunderblast out of commision.
- I Just Want to Be Badass: When it comes to not being allowed to go on missions with the Autobots, she's usually always the first to complain about it.
- Last Minute Hookup: Has become Coby's girlfriend by the last episode and grows up to become his wife in the epilogue.
- The Smurfette Principle: Only girl amoung the three kids.
Colonel Mike Franklin
- Cannot Spit It Out: Lucy eventually realized Mike was never going to fess up on his feelings for her, so she called him out on it.
- Last Minute Hookup: After a series of UST with Lucy, Lucy badgers him into a spring wedding and they are later seen with a baby in the epilogue.
- The Men in Black
- Reasonable Authority Figure
- Scary Black Man: Subverted, though he had us going for a while.
Dr. Lucy Suzuki
- Hot Scientist
- Last Minute Hookup: Right before the series ends, she manages to hook Mike after outing his feelings for her as well as the mutual affection she has for him, requesting a spring wedding. The two marry and have a baby girl in the epilogue.
- Nerd Glasses
- Secret Keeper: As of "Ice", she now knows of the Transformers' existence on earth and the kid's involvement with them.
- Recurring Character
Sideways' new partner in crime, out to avenge their dead world.
- Beware the Silly Ones: Despite his odd way of speaking, Soundwave is actually the more serious-minded of the two, and it's implied several times that he's putting the act on.
- Big Bad Duumvirate: With Sideways as part of the Big Bad Ensemble, though the pair serves as a secondary Big Bad.
- Master of Disguise: He can mimic anybody's voice, which combined with his illusion ability means that he can torment people further.
- Obfuscating Stupidity: It's often implied that he's putting the whole DJ thing on as an act to throw people off.
- Pop-Cultured Badass: Speaks like an eighties-era DJ.
- Remember the New Guy?: He was apparently a servant of Unicron according to the comics, but we never saw him do this in the show.
- Those Two Bad Guys: With Sideways.
- Tragic Villain: The reason that he pledged loyalty to Unicron was so he could avenge his dead world.
- Undying Loyalty: Oddly enough, this is possibly the only version of Soundwave not to show this towards Megatron. His home planet is another story.
- Villainous Friendship: With Sideways.
The God of Cybertronians.
- Authority Equals Asskicking: As a god, you'd be worried if this trope wasn't in place.
- Genius Loci: He isn't just dormant within Cybertron; he is Cybertron.
- God Is Good: He's a benevolent force in the universe, for both humans and Cybertronians.
- Handicapped Badass: Believe it or not, his full power is actually restricted for most of the series as part of his soul is essentially disconnected from his body.
- Sci-Fi Writers Have No Sense of Scale: Mercifully, it's not as bad as with Unicron in Armada, as most combatants seeking to fight him have to size up a bit.
- Worf Had the Flu: Galvatron stuns him at one point with a blast of dark energy, although to be fair Galvatron has a MacGuffin or four boosting his power to ridiculous levels, and Primus had used up much of his power trying to keep the black hole in check.