See the partial list of 'Transformers' movie franchise Autobot characters here: http://www.imdb.com/list/ls064631971/
Autobots (current through 2017's Transformers: The Last Knight)
Transformers: The Last Knight
Possible Character Additions (rumored)
Hot Rod, Alternate Modes: Citroën DS and Gray/Orange Lamborghini Centenario LP770-4
Sqweeks, Alternate Mode: Turquoise Vespa Scooter
Cogman, Alternate Mode: 2017 Aston Martin DB11
Canopy, Alternate Mode: shielding pile of rubble
Bulldog, Alternate Mode: Mark IV tank
Gar Jukion, Alternate Mode: Blue Mercedes-Benz Model 1924 Dump Truck
Alternate Mode: Mercedes-Benz LK Model 1920 dump truck
Autobot: Bulldog as voiced by John DiMaggio
Alternate Mode: Gray 1917 Mark IV tank
Alternate Mode: Hendrick Motorsports #48 Lowe's/Kobalt Chevrolet Impala
Alternate Mode: Camouflaged Pile of Rubble
Autobot: Baby Dinobots as voiced by No One
Alternate Mode: None
CREDIT CHECK 7/11/17
The next installment, Bumblebee (2018) premieres 21 December 2018 (USA).
(Bumblebee cast credits courtesy of Transformers Wikia and IMDb credits)
Dylan O'Brien ... Bumblebee (voice) Bumblebee is an Autobot whose modes include a Volkswagen Beetle and a Yellow Chevrolet Camaro
Peter Cullen ... Optimus Prime (voice) Optimus Prime is an Autobot whose past modes include a Red/Blue Peterbilt 379 Semi-Truck, Rusty Marmon Semi-Truck and Blue/Red Western Star 5700XE Custom Phantom Semi-Truck
Steve Blum ....Wheeljack (voice) is an Autobot whose past modes include a Blue Mercedes-Benz E550
Andrew Morgado ... Cliffjumper (voice) Cliffjumper is red Bumblebee dopplehanger whose past modes include a red Chevrolet Camaro and red VW Bettle (no prior live-action movies, but transformations supported by cartoon appearances and merchandising
Grey Griffin ... Arcee (voice) is an Autobot whose past modes include a Buell Firebolt XB12R and a Ducati 848 Superbike
Kirk Baily ... Brawn / Decepticon Soldier (voice) n film Bumblebee, Brawn appears in the prologue during the battle of Cybertron, where he was supposedly injured or killed by one of the Seekers. Brawn transforms into a Hummer HX with war modifications, such as the gun turret on top.
Dennis Singletary ... Ratchet (voice) is an the autobot's medic whose modes include an AM General Hummer H2 Rescue Vehicle
"On June 21, 2017, Transformers: The Last Knight was released. The film was universally panned by film critics and underperformed at the domestic and international box-office, becoming the least profitable film in the franchise. On May 23 the following year, the planned sequel was removed from Paramount's release schedule. By December 2018, di Bonaventura stated that there would still be further films in the series, while also acknowledging that the franchise will make some changes in tone and style due to the success of Bumblebee.
By March 2019, di Bonaventura stated that the studio was developing sequels to Bumblebee and The Last Knight,but the following month, he said that a direct sequel to Transformers: The Last Knight was not in development yet. Currently Paramount Pictures and Hasbro Studios are also developing an untitled spin off film based on the character Optimus Prime, a animated film set on Cybertron, a sequel to Bumblebee which will be a Bumblebee and Optimus Prime buddy movie, a live action Beast Wars, Transformers Love Stories, a Transformers/G.I. Joe Crossover, Live Action Transformers TV Shows and a Reboot film."