Transformers: Generation 1
Overload box art
|Function||Troop Transport (Hasbro), Overland Commander (Takara)|
|Motto||"Know your enemy and he's yours"|
|Alternate Modes||Tractor Trailer / Jet|
|Series||Transformers: Generation 1|
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. 
Although the U.S. 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.
Although Overload did not appear in the Dreamwave storyline, he did get a biography in their More Than Meets The Eye title.
- Generation 1 Mircomaster Overload (1989)
- A Micromaster Transport. 
|Japanese name||Ultra Magnus|
|Partners||Rollout, Optimus Prime|
|Motto||"I serve at the will of Optimus Prime."|
|Alternate Modes||Tractor Trailer, TOS-1 rocket launcher|
|Series|| Transformers: Armada|
The second Overload is an Autobot/Mini-Con Headmaster unit who combines with Optimus Prime.
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.
Overload and Rollout were given more personality in the Dreamwave Armada comic book series. He first appears in issue #16 as part of Jetfire's team investigating anomalies at the Decepticon base - unaware it had been taken over by the Heralds of Unicron. Bludgeon is still present and stalks the team from the shadows, killing and wounding several. Eventually destroying Bludgeon's Pretender shell, Overload and the others set charges to destroy the base - as the other Heralds arrived. Jetfire orders them to flee, destroying the base himself. He is seen in the subsequent battle against Unicron.
In the follow-up Energon comic, Overload appears as part of the crew of Base Site One alongside Ironhide and Dropshot. Attacked by Scorponok, Overload is easily defeated. Scorponok is then defeated by Megatron. As this is the final issue of Energon published by Dreamwave, it is unclear whether Overload would have appeared again.
- Armada Overload with Rollout
- Energon Overload with Rollout
- Packaged with a redeco of Armada Optimus Prime and his Mini-Con. A Costco store exclusive.
- Universe Cybertron Series Voyager Overload
- A Voyager class toy, a redeco of Cybertron Cybertron Defense Scattorshot.
'Universe Overload toy
|Japanese name||San Diego|
|Alternate Modes||Steam Locomotive|
|Series|| Transformers: Generation 1|
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. 
- Generation 1 San Diego (1992)
- This toy was a redeco of Alan. A Takara exclusive.
- Generation 1 San Diego reissue (2003)
- Came with the head and gun of Sixtrain. 
- Generation 1 San Diego red mode (2003)
- A red redeco of the toy. Came with the head and gun of Sixtrain Red Mode.
- Universe Micromaster Overload (2005)
- Swindle came with the thighs to Rail Racer.
- The Micromaster Railbots were released in Cybertron packaging in European countries, as they didn't have the Transformers: Universe line. 
Transformers: Revenge of the Fallen
|Sub-group(s)||Constructicons, Micro Vehicles|
|Partners||Hightower, Longhaul, Mixmaster, Rampage, Scavenger and Scrapper|
|Alternate Modes||Komatsu HD465-7 Articulated dump truck|
|Series||Transformers: Revenge of the Fallen|
The fourth Overload 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. 
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.
- Revenge of the Fallen Legends Overload (2009)
- A new mold. Can form robot or vehicle modes or combine into Devastator. 
- This toy was initially sold individually in Japan, then sold as a 7-pack of all the Constructicons in the U.S.
- ↑ Alvarez, J.E. (2001). The Unofficial Guide to Transformers 1980s Through 1990s Revised & Expanded 2nd Edition. Schiffer Publishing Ltd.. p. 87. ISBN 0764313649.
- ↑ http://www.webcitation.org/query?url=http://www.geocities.com/oblivionsgallery13/techs1990.html&date=2009-10-25+23:54:28
- ↑ http://www.tfu.info/1989/Autobot/Overload/overload.htm
- ↑ http://www.tfu.info/2003/Autobot/Overload/overload.htm
- ↑ http://www.webcitation.org/query?url=http://www.geocities.com/oblivionsgallery13/micromasterstory.html&date=2009-10-25+23:54:26
- ↑ http://www.tfu.info/2003/Cybertron/SanDiego/sandiego.htm
- ↑ http://www.tfu.info/2005/Autobot/KBOverload/overload.htm
- ↑ http://www.usatoday.com/life/movies/news/2009-04-01-transformers-first-look_N.htm First look: Robo-brawlers big, small in new 'Transformers' By Anthony Breznican, USA TODAY
- ↑ http://www.tfw2005.com/transformers-news/transformers-movie-just-movie-31/revenge-of-the-fallen-constructicons-size-comparison-168152/
- ↑ http://www.toywizard.net/transformers-movie-ez-collection-dx-devastator-set/