A4D Wiki
Transformers character
First appearance Transformers: Generation 1
Voiced by Dave Fennoy
{Japanese) Bin Shimada
Aliases Roadjet
Ultra Magnus,
San Diego
Affiliation Autobot
Partner Rollout
Optimus Prime
Long Haul
Alternate mods Tractor Trailer / Jet
Tractor Trailer, TOS-1 rocket launcher
Steam Locomotive
KW Dart D4661 Articulated dump truck
Cybertronian Tank

Overload is the name of four different fictional characters in the many continuities in the Transformers franchise. They are seemingly unrelated besides sharing a name.

Transformers: Generation 1

The original Overload (called Bomber in Italy) was the name of an Autobot Micromaster who turned into a semi-truck. His trailer turned into a jet.

His bio described him as the ideal soldier, brave, daring and a gifted battlefield tactician. However, he is described as working with the Autobot transport system on cargo hauling missions, while his impulsiveness usually leads to him disobeying orders and joining the battle himself.

According to Roadjet's Takara biography he is a chief of over land combat, and treats his subordinates like he is their father. It is his responsibility to transport the patrol teams and weapons to their destination.

Animated series

Although the US animated series was canceled before Overload was created, he did appear briefly in animated form in the commercial for his toy. Groundshaker was seen flying over a Micromaster city which was held in the palm of the hand of Powermaster Optimus Prime. In the city you can clearly see the Micromaster Overload, Erector and Hot House's base.

Transformers: Armada

The second Overload is an Autobot/Mini-Con Headmaster unit who combines with Optimus Prime.

Animated series

Apparently a non-sentient weapons platform crafted by the Mini-Cons at the same time as they recreated Optimus Prime's body, Overload can convert from vehicle mode into a set of cannons and combine with Optimus Prime for added firepower. He is also shown to possess a robot mode, seen only once in a crowd scene, but shows no signs of any intelligence or life. Overload's toy is packaged with the Mini-Con, Rollout (Magnus in Japan), who appears in the show in his role of Overload's cab and head, but in a capacity even more minimal that his larger partner's. Although the character was called Overload in English, there is one instance in "Union" where Optimus Prime wrongly refers to Overload as Ultra Magnus.

Transformers: Universe

The third Overload was a Micromaster who turns into a train, a member of the Railbots. He is the first U.S. release of the Japanese Generation 1 Micromaster named San Diego. He combines with the other Railbots to form Universe Rail Racer (Sixtrain in Japan).

According to San Diego's biography: "An engineer by nature, he busies himself daily with the maintenance of their metro base headquarters. With the help of the build team, he endeavours to power up the Autobots with the new items he produces in rapid succession. Deeply impressed by Earth culture, he's had an episode in which he was going to hold a wedding ceremony with Discharge."

According to the story with Sixtrain Red Mode, the Sixtrain turns red and becomes more powerful when empowered by a piece of the Maxtix.

Transformers Cinematic Universe

The fourth Overload appears in Transformers: Revenge of the Fallen and is one of the Constructicon models and part of Devastator. He transforms into an articulated dump truck and forms the torso of Devastator, along with Scavenger. He stands about 30 feet tall, not counting the arm on his back.

Movie plot

Overload is seen when the Constructicons merge into Devastator. He never transforms into his robot mode and is seemingly killed when Devastator is destroyed by a rail gun round.

Transformers: Robots in Disguise

Overload is the name of a character from the 2015 animated series, Transformers: Robots in Disguise. This version is a Shakespearean-mannered Deception who transforms into a Cybertronian tank and was a spy during the War for Cybertron. His efforts greatly damaged Autobot installations until he was discovered by Optimus Prime himself which led getting incarcerated aboard the Alchemor Prison ship. During the battle, he also severely damaged Optimus Prime's top scout and that scout lost his voice as a result. He is later freed during the crash where he would be partnered with a pair of Cyclone Mini-cons, Backtrack & Ransack.


Overload debuted in the two-part episode "Overloaded" where he demanded the Autobots for turn over Optimus Prime, during the battle at the scrapyard, Overload accidentally knocked over two stasis pods holding Backtrack & Ransack. During his escape, he encountered the pair and earned their trust to wreak havoc on Crown City in order get Optimus's attention until Bumblebee found him & the mini-cons where he convinced Backtrack & Ransack to turned on their master, rendering him unconscious with a punch and returning to Stasis. He is later freed by Steeljaw and brought to Glowstrike in "Misdirection", but is recaptured in the two-part episode "Decepticon Island."