- Peter Cullen, Garry Chalk, or Paul Eiding as Optimus Prime
- Jossed. Jake Tillman takes the role of voicing Optimus Prime.
- Adam McArthur, Will Friedle, or Dan Gilvezan as Bumblebee
- Gregg Berger or Matthew Mercer as Grimlock
- Kelly Hu or Stephanie Sheh as Windblade
- Christopher Swindle or James Horan as Wheeljack
- Fred Tatasciore or Jeffrey Combs as Ratchet
- Judd Nelson or Johnny Yong Bosch as Hot Rod
- Michael Bell or Kevin Michael Richardson as Prowl
- Max Mittelman or John Moschitta as Blurr
- Frank Welker or David Kaye as Megatron
- Jossed. Marc Thompson is Megatron's VA.
- Steve Blum, Joe Whyte, Sam Riegel, or Mark Hamill as Starscream
- Corey Burton or David Sobolov as Shockwave
- Frank Welker or Isaac Singleton Jr. as Soundwave
- Jessica DiCicco as Shadow Striker
- Dee Bradley Baker as Acid Storm
- Cristina Valenzuela as Slipstream
- Jossed. She’ll be voiced by Lianne Marie Dobbs.
- Crispin Freeman as Thundercracker
- OP here. All of these guesses are pretty much jossed. They've brought in fresh talent for the series, most of them veterans of 4Kids.
- The Aerialbots
- Airazor
- Alpha Q
- Alpha Trion
- Confirmed, and later dies in the episode he debuts in, Matrix of Leadership.
- Anomaly
- Arcee
- Confirmed.
- Armordillo
- Astrotrain
- Backstop (Rhino)
- Blackarachnia
- A Tiny Turbo Changer toy was released, but she isn't on the show.
- Blackout
- Blaster
- Blitzwing
- Bruticus Maximus
- Bulkhead
- Chase
- Cheetor
- Confirmed.
- Chromia
- Confirmed
- Clicker
- Cliffjumper
- The Combaticons
- The Constructicons
- Crash Test
- Crumplezone
- Cyberwarp
- Deathsaurus
- Defensor
- Depth Charge
- Demolisher
- Doublecross
- Elita-1
- The Functionaries
- Fortess Maxiums
- Gaiacross
- Gas Skunk
- High Tide
- Hotshot
- Ironhide
- The Insecticons
- Inferno
- Jetfire
- Confirmed.
- Knockout
- Kup
- Confirmed.
- Leobreaker
- Lockdown
- Confirmed.
- Lugnut
- Sort of. A very Lugnut-looking but female Decepticon named Clobber is part of Megatron's forces on Earth. Hasbro, for whatever reason, didn't want her to be named Lugnut. The decision was handed down so late in production that some foreign dubs of the cartoon call her Lugnut anyway.
- Predaking
- Metalhawk
- Metroplex
- Micronus Prime
- Mohawk
- Moonracer
- Nemesis Prime
- Optimus Primal
- Orion Pax
- Seemingly Jossed; even though Megatron and Optimus have occasionally mentioned his time as a data clerk, neither mention Optimus going by any other name.
- The Powerdashers
- Perceptor
- Confirmed as he appears as a cameo in Episode 2
- Beast Wars Rampage
- Ransack
- Rattrap
- Razorclaw (Corrupted Tigerhawk)
- Red Alert
- Rhinox
- Roadblock
- Saberhorn
- Scissor Boy
- Scorpinok
- Sentinel Prime
- Beast Wars Silverbolt
- Skybite
- First, the correct name is Sky-Byte, and also, confirmed.
- Sky Lynx
- Skywarp
- Confirmed, albeir female this time.
- Spinhead
- Star Saber
- The Star Seekers
- Star Upper
- The Stunticons
- Swoop
- Tarantulas
- Tasmania Kid
- The Technobots
- The Terrorcons
- Tigatron
- Transmutate
- Treadshot
- Ultra Magnus
- Viper
- Waspinator
- Wreck-Gar
- X-Throttle
- He died before the events of the series. In a battle with Optimus-or in the revolution. He was part of the seekers with Scream and Cracker before his death and he was replaced by Slipstream after. When Unicron arrives he will bring back Skywarp as Cyclonus. (Or just a powerful version of himself).
- Season 3 proves that Skywarp did appear, but is depicted as female this time.
- Megatron is dead by the time Bumblebee winds up on Earth. And Starscream is the leader of the Decepticon, but he is pretending Megatron is still alive.
- Jossed. Megs appears in season two, and KILLS Starscream!
- Except not, it seems. Starscream managed to survive, or come back to life somehow.
- Jossed. Megs appears in season two, and KILLS Starscream!
- His natural speaking pattern is much more like the Hulk Speak we're familiar with and is possibly an accent of some sort. For some reason, he's forcing himself to speak "properly" and not with his natural manner of speech.
- Jossed... kinda. He has two different voice patterns when in robot and in dinosaur mode. When in robot, he speaks in a rather Shakespearian manner. In dinosaur mode, he speaks in Grimlock's trademark Hulk Speak.
- Shockwave has a similar backstory, to his IDW counterpart.
- While we focused on Grimlock landing on prehistoric earth, we also see several other stasis pods get sucked out of the ark. It's possible some of those Autobots were the Cyberverse equivalent to the Dinobot team and also got dino modes to survive and will later form the original team with Grimlock.
- The trailer for season 2 of Cyberverse revealed that Cheetor will make an appearance. It is highly possible for other characters from Beast Wars to make an appearance.
- Those who could show up are:
- Rhinox
- Airazor
- Depth-Charge
- Rattrap
- Black Arachnia
- Dinobot
- Terrorsaur
- Waspinator
- Weirdly enough, while none of those characters showed up, Air Hammer (the hammerhead shark/falcon Fuzor) showed up as a species of space-dwelling predators. Grimlock also mentions having fought a troop of Bantors, who was a tiger/mandrill Fuzor toy.
- Jossed. Strika herself appears in the third season (albeit under the name "Alphastrike").
- The original Slugslinger transformed into a jet with two cockpits. Rack 'n' Ruin is pretty obscure, so why not make his Evil Counterpart somewhat obscure as well?
Now that the Allspark is on Earth, it needed a protector. Cheetor was the guardian that it chose, giving his spark a new body so that he could interact with the world of the living. Cheetor says that the only thing he can remember before getting his current body is being one with the Allspark, before being tasked with defending it.
The evidence is that this has happened before with another of the Thirteen: Optimus Prime. He was the one who helped carry the dying Onyx Prime to the Well of All Sparks and chose to enter it and return to the Allspark as well, except with the intent of returning eventually as a common Cybertronian rather than to stay there forever like Onyx did. Eventually, he did: as Orion Pax, who later chose the name Optimus after joining the Autobots and eventually becoming a Prime. And like Cheetor, he initially couldn't remember his former life during the Age of Primes.
Now in part 4 Cheetor becomes one with the Allspark, to prevent Shockwave destroying it. Part of what we see of this is the pool Hot Rod and Drift died in lighting up. Logically therefore we can assume that Hot Rod and Drift did perish in part 3, but then Cheetor used the Allspark to revive his friend, while Drift, who betrayed Cheetor was left to his original fate.