!!Optimus Prime
->Voiced by: Creator/NeilKaplan (English), Satoshi Hashimoto (Japanese)

The leader of the Autobots.
* AFatherToHisMen
* {{Badass}}
** BadassBaritone
** BadassInCharge
** BadassPacifist
* BewareTheNiceOnes
* BigGood
* TheCaptain
* CatchPhrase: Like any incarnation of Optimus Prime, "Autobots, transform and roll out!".
* GentleGiant
* TheHero
* MyGreatestFailure: He feels terrible about not being able to save the Decepticons from Megatron's BrainWashing,
* NiceGuy
* OneManArmy: One of the few Autobots who can fight Megatron without combining with anyone else.
* PapaWolf
* ParentalSubstitute: To Koji, while his dad was the prisoner of the Predacons.
* SuperMode: Battle Mode, by combining with his trailer. Actually quite smart about it, as he will often use it immediately, rather than as a last-ditch.
** Curiously, some episodes showed him in Battle Mode with no reason to be.
* WideEyedIdealist: Whole-heartedly believes the Decepticons have it within them to change.
* WorthyOpponent: Scourge

!!Ultra Magnus
->Voiced by: Creator/KimStrauss (English), Takashi Matsuyama (Japanese)

One of the Autobots' greatest warriors. [[spoiler: Although Ultra Magnus would remain a free agent for some time, he would still come to aid the Autobots whenever he felt they required assistance.]]
* BigBadassRig
* BloodKnight: Rare for an Autobot.
* CainAndAbel: The Cain to Primes Abel.
* ComicallySerious: Magnus is essentially the ultimate old-fashioned StraightMan, especially when paired with someone like Side Burn or Sky-Byte.
* DefrostingIceKing: It takes a ''lot'' of time and patience.
* IWasJustPassingThrough
* JerkWithAHeartOfJerk: Later he graduates to a JerkWithAHeartOfGold.
* ProudWarriorRaceGuy
* TheRival: To Optimus. The feeling is not mutual.
* RoboFamily: Optimus Prime's brother.

->Voiced by: Creator/SandyFox (English), Creator/ChiekoHiguchi (Japanese)

The Tactical Artificial Intelligence, sentient computer A.I. of the Autobot base. Responsible sending out certain bots for perticular missions.
* MissionControl
* PinkMeansFeminine
* ProjectedMan: Well, projected ''girl.''
* TheSmurfettePrinciple: Even though she's not ''technically'' a female, or an Autobot. She's the only female bot/machine regular cast member.
* ToylessToylineCharacter: Except in Japan, but that "toy"... is just plain ''creepy''.
* SuspiciouslySimilarSubstitute: To Teletraan I.

->Voiced by: Walter Lang (English)

An Autobot tow truck who is really strict about the "no parking" rules.

* ByTheBookCop: Even Prowl notices he may go somewhat overboard.
* CatchPhrase: "No parking means no parking!"

->Voiced by: Creator/MichaelLindsay (English)

A competitive Autobot racing car.

!!Fortress Maximus

A colossal Autobot guardian hidden on Earth. Strong and durable, Fortress Maximus is an unstoppable force for good.
* HumongousMecha: Biggest bot in the series.
* LastOfHisKind: Only one of his kind really.
* LosingYourHead: The only Headmaster of this series.
* MoreDakka: The amount of firepower Maximus possesses, is considerable.
* TerseTalker


[[folder:Autobot Brothers]]

!!Side Burn
->Voiced by: Creator/WallyWingert

One of the smaller Autobots who frequently chases after cute little sports cars.
* BashBrothers: What it means to be an Autobot Brother.
* [[BadassFamily Badass Robot Family]]: Along with his brothers Prowl and X-Brawn.
* FreudianTrio: The impulsive Side Burn is the Id.
* FunPersonified: A likable young fella who just happens to be a StalkerWithACrush for anyone driving a cute red sports car. (Or rather, cute red sports cars ''themselves.'')
* FriendToAllChildren: Always the guy that lets Koji talk him into taking him along.
* TheHeart
* KidAppealCharacter
* LovableSexManiac
* MoralityChain: All the Autobot Brothers are this for Ultra Magnus, though Side Burn warms up to him sooner than the others.
* NiceGuy
* RobotKid
* SiblingTeam: They're not called the Autobot ''Brothers'' for nothing you know.
* SuperSpeed: He's described as the fastest of the brothers.

!!!Function: Cop

An Autobot officer, who ''always'' goes [[ByTheBookCop "by the book"]].
* [[BadassFamily Badass Robot Family]]: Along with his brothers Side Burn and X-Brawn.
* BashBrothers: What it means to be an Autobot Brother.
* BerserkButton: You break the traffic laws, [[PlayedForLaughs ''he will show no mercy!'']]
* ByTheBookCop: [[NotSoAboveItAll Not always]].
* FreudianTrio: Prowl's attachment to the rules makes him the Superego.
* JerkWithAHeartOfGold: He's a good guy, but his strict nature can make him act like a jerk.
* TheLancer: Alternates with X-Brawn.
* NoIndoorVoice: But only when he's ''really'' upset, or he sees somebody breaking the law.
* ReasonableAuthorityFigure
* SiblingTeam: They're not called the Autobot ''Brothers'' for nothing you know.

!!!Function: Demolitions

The eldest of the Autobot Brothers, X-Brawn's rugged outdoorsman type, who loves driving off-road.
* BadassGrandpa: Though he's really not much older than the other two, he often acts more mature.
* [[BadassFamily Badass Robot Family]]: Along with his brothers Prowl and Side Burn.
* BashBrothers: What it means to be an Autobot Brother.
* BigBrotherInstinct: You mess with his younger brothers, you mess with him.
* TheBigGuy: May have something to do with his Texas drawl.
* BoisterousBruiser
* CoolOldGuy
* DeadpanSnarker
* FreudianTrio: X-Brawn is the Ego, more level-headed than Side Burn, yet not as strict as Prowl.
* GoodOlBoy
* SiblingTeam: They're not called the Autobot ''Brothers'' for nothing you know.


[[folder:Team Bullet Train]]
!!Combined Form: Rail Racer
!!!Railspike, Midnight Express, Rapid Run,

A combiner team made up trains.
* BigThinShortTrio: Though they're all ''pretty'' much the same height.
* CombiningMecha: They come together to form Rail Racer.
* PowerTrio
* SiblingTeam: Just like the Autobot brothers team.
** TheLeader: Railspike
** TheBigGuy: Rapid Run
* TheKlutz: Midnight Express.


!!Hot Shot
* TheLeader
* JerkWithAHeartOfGold
* FunWithAcronyms: His name stands for Race Evolution Vehicle.
* FunWithAcronyms: His name stands for Wicked Attack Recon Sportscar.
* ShoutOut: His name is written on his side, and taken from the "Wars" in the BeastWars logo.

[[folder:Build Team]]
!!Combined Form: Landfill
!!!Function: Construction, Leader: Wedge, Members: Heavy Load, Grimlock, Hightower

A combiner team made up construction vehicles who to act as the space bridge repair crew.
* CombiningMecha: Together the Build Team forms Landfill.
* BloodKnight: Wedge is sometimes a little ''too'' eager to prove himself as a warrior.
* KidHero: Wedge.
* NiceGuy: Grimlock, he's certainly a far cry form that ''other'' [[TransformersGeneration1 Grimlock]].
* ThisIsADrill: Hightower.





The leader of the Predacons, and later the Decepticons and one of the most powerful Transformers in existence.
* AFatherToHisMen: Believe it or not, albeit a gruff one. He will praise his warriors when they've done a good job.
** BadBoss: Where as Megatron genuinely respected his warriors, Galvatron had a tendency to suddenly try and kill his troops.
* AxCrazy: The guy is soooo ''not'' mentally stable.
* {{BFG}}: He's got quite a few in his collection.
* BigBad
* DragonInChief: To the unseen Predacon Council.
* EvilLaugh: The sheer ''creepiness'' his laugh is really noticeable when he's on a roll.
* EvilOverlord
* LargeHam
* OneManArmy: Frequently portrayed as an unstoppable force on the battlefield.
* TookALevelInJerkass: As Galvatron, Scourge and the Decepticons were toast.
* PurpleIsPowerful: Megatron's color scheme.
* ThatManIsDead: Boasted that he as Galvatron was a distinct entity from Megatron, which is rather silly considering the only apparent physical change was his paint job. However, his personality did get some severe adjustment.

!!!Predacons: Sky-Byte, Slapper, Gas Skunk, Dark Scream

A quartet of Predacons who are powerful (though very stupid), all possessing savage(?) beast modes.
* TheChewToy: Mostly Sky-Byte poor poor Sky-Byte...
* CrouchingMoronHiddenBadass: Sky-Byte, he's actually a pretty good fighter when he puts an effort into it. It's just that he has the worst/dumbest allies ever!
* DumbMuscle: All of them qualify to one degree or another.
* [[FiveBadBand Four Man Band]]: Par for the course for "Robots In Disguise":
** DragonInChief: Sky-Byte, to Megatron.
** TheDragon: Slapper
** TheEvilGenius: Gas Skunk
** TheDarkChick: Dark Scream
* InformedAbility: Their (supposedly) a quartet of four vicious, robots with savage animal modes who have destroyed many planets? ''Really?''
* LaughablyEvil
* TheStrategist: Sky-Byte
* UndyingLoyalty: Sky-Byte's loyalty to Megatron is unquestionable.
* WarriorPoet: Sky-Byte, or he'd like to think he is anyway.




Scourge is arguably Megatron's second in command, leading the Decepticon forces
* ArchNemesis: To Optimus Prime.
* BigBadWannabe
* BigBadassRig
* BloodKnight
* ChronicBackstabbingDisorder
* EvilSoundsDeep
* {{Expy}}: of Starscream.
* HiddenAgendaVillain
* HoistByHisOwnPetard: [[spoiler:Once he ''thought'' he'd managed to oust Megatron from command, his arrogance and lack of control over Fortress Maximus brought him back down. Megatron then wiped away his memories, and he never tried again.]]
* SmugSnake: Scourge believes himself to be deadlier, and a more capable warrior than the rest of the Decepticons and Predacons. He has frequently been portrayed as more than a match for most of the Autobots. Unsurprisingly, he may actually be correct in his assumptions.
* TheStarscream

!!!Mega-Octane, Ro-Tor, Armorhide, Rollbar, Movor

A group of Autobots turned Decepticon thanks to Megatron's meddling. They transform into combat vehicles and serve as Megatron's top generals.
* CombiningMecha: Their combined form, Ruination.
* FiveBadBand:
** TheDragon: Mega-Octane
** DumbMuscle: Ro-Tor
** EvilGenius: Rollbar
** TheBrute: Armorhide
** DarkChick: Movor
* LeaderFormsTheHead: Actually averted, Scourge is technically the leader, but not part of Ruination at all. Mega-Octane forms the ''key'' component of Ruination. However, as second-in-command of the Decepticon group, he's still the superior of the other four components.
* ThePsychoRangers
* SurveillanceAsThePlotDemands: When an episode needs the Decepticons to find about some Autobot activity, it turns out Movor is spying from space.