Transformers
In the 2007 Transformers live-action movie, Optimus Prime is the Autobot commander. His appearance is somewhat different from his original form, although he is still recognizable to many fans. In the movie his team of Autobots on Earth consists of only four others: Bumblebee, Ratchet, Ironhide and Jazz. What is also duly noted is that the Autobots faces actually resemble the Autobot insignia, the same for the Decepticons. Later, Arcee, Skids, Mudflap, Sideswipe, Jolt, Wheeljack, Mirage and the Wreckers come to Earth.
In the live-action film "Transformers", the Autobots arrived on Earth to find the All Spark in an effort to restore a destroyed Cybertron. The beginning of the movie, narrated by Optimus Prime, indicates that all life on Cybertron came from "The Cube." In the beginning, Optimus Prime and Megatron ruled Cybertron together. However, Megatron soon began to desire the power of the AllSpark. To counter Megatron, Optimus formed the Autobots, a militia of civilian Transformers sworn to protect the AllSpark. Throughout the evolution of the Transformers, wars brought on the demise of their planet. Although the Autobots initially make a poor first impression with the authorities, the US government is eventually convinced by Sam Witwicky that they are allies against the true threat of the Decepticons and cooperate to help them in the battle to keep the AllSpark away from the enemy. During the battle, all the Decepticons are destroyed, except for Starscream, Barricade and Scorponok, but the Autobots lose one of their members, Jazz. Optimus Prime decides to make Earth their new home.
In Transformers: Revenge of the Fallen, the surviving Autobots from the previous film, as well as newer arrivals, serve as part of a top secret joint USA-UK military strike force codenamed NEST, which is dedicated to hunting and destroying Decepticons around the world. In this organization, Major William Lennox and Optimus Prime share field command of the human military personnel and the Autobot members respectively. The only exception to this assignment is Bumblebee who stays with the Witwickys as their bodyguard.
Although NEST has a productive history dealing with the Decepticons, a successful mission in Shanghai, which caused excessive collateral damage, drew criticism from the team's government superior American National Security Advisor Galloway. He further suggests that since the primary Decepticon goal, gaining the remaining portions of the All Spark, is likely out of reach, the Autobots should leave the planet to draw their war with their enemy away. This conclusion is completely discredited when the Decepticons reappear in force to both steal that item and successfully revive Megatron. Furthermore, their execution of their superior's (the Fallen) plan to destroy the Sun reveals that numerous Decepticons are present on Earth, which more than justifies the Autobots' participation in National Defense affairs. According to related materials, Bumblebee remains responsible for the Witwickys' security. Arcee, a Ducati motorcycle, amongst other Autobots make their live-action debut. A massive battle takes place in which Optimus Prime, killed by Megatron in an earlier battle, is revived and many Decepticons are killed, including Devastator, Scorponok and the Fallen but Megatron and Starscream escape, albeit with Megatron severely injured and the Decepticon spymaster Soundwave also survives, having never participated in the battle.
The word "Autobot", according to Ratchet, is an abbreviation of the phrase Autonomous robotic organisms, making it seem like Autobot is likely the Transformers species name in this continuity (the irony being that the term robot is derived from the Czech word "robota" for 'work' and thus expresses the opposite of autonomy).
In Transformers: Dark of the Moon the Autobots, now consisting of Bumblebee (no longer Sam's guardian for an unspecified reason), Que/Wheeljack, Sideswipe, Dino/Mirage, Ironhide, Optimus, Ratchet and the Wreckers investigate alien activity around the world and have set up Energon Detectors in all the major cities in order to detect Decepticon activity. Apparently the Autobots haven't had any contact with the Decepticons since Egypt, or at least any major contact, but this changes when they travel to Chernobyl to investigate alien activity there and find an engine part from the Ark and are attacked by Shockwave and his Driller. The Autobots travel to the Moon after learning of the Ark and Sentinel Prime being there. After Sam Witwicky uncovers the Decepticons plot to use Sentinel, the Autobots are attacked by the Dreads before they are killed by Dino, Bumblebee, Ironhide and Sideswipe. Sentinel reveals his true colors and murders Ironhide and issues an ultimatum to force the Autobots off Earth in the Xantium where they apparently killed by Starscream. The Autobots survive and secretly make their way to Chicago, which the Decepticons have taken over and link up with a team led by Sam and Robert Epps. The Autobots battle an army of Decepticons and Decepticon ships to reach Sentinel and stop his plan to bring Cybertron to Earth and manage to eliminate most of the army including Laserbeak, the Driller, Starscream, Soundwave, Shockwave and Barricade with the humans help, although Que is killed in the process, before confronting Sentinel after shooting down the Control Pillar and stopping the Space Bridge temporarily. The Autobots and humans outmatch Sentinel who flees before engaging Optimus one on one while Sam kills the evil human Dylan Gould who reactivates the pillars, allowing Ratchet and Bumblebee to destroy it. Deactivating the Space Bridge has the side-effect of destroying Cybertron however, but the Decepticons plot is foiled. Optimus is nearly killed by Sentinel, but Megatron saves him after being convinced to help by Carly Spencer and Optimus kills both Megatron and Sentinel despite Megatron offering a truce with the Autobots. The Autobots score a major victory as much of the Decepticon army on Earth is decimated (there are still scattered Decepticons around the globe) and their entire command structure has been killed, but they also lose Cybertron and must accept Earth as their new home.
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