Hugo Weaving provides the voice of Megatron in the film. His voice in the film seems to have been modulated to give it a deeper, growling tone as well as the other voice actors. The original voice of Megatron, Frank Welker, provides his voice for the official video games of the movie, along with the exclusive animated prequel.[5]
Like all characters in the film, Megatron was heavily redesigned for purposes of realism and focus on an alien aspect of the Transformer race. However, he still retains some minor aspects of his Generation 1 design. As shown in the film, he can transform his right hand into a gun, combine both of his arms to form his iconic fusion cannon, and can transform his right arm into a steel flail. In the second film, after Megatron's resurrection, his right arm can transform into the fusion cannon in its entirety, coupled with a lobster claw-like blade/crushing apparatus. According to an early interview with Michael Bay, Megatron stands at 41 feet(11.0M) tall,[6] but according to his profile in the second issue of the Transformers UK comic Megatron stands "35 feet (10.6 m) tall" and weighs 8.6 tons. Additionally, the magazine and the Movie Guide states he is powered by a self-regenerating dark matter power core.
BotCon Malaysia 2007 featured a parking space which was "Reserved for Megatron". A car parked in the space had been totaled, presumably by the Decepticon leader for taking his spot.
In Transformers Animated, Megatron was not the main antagonist for much of the first season, but in season two, he took back the role of the primary antagonist. Megatron's Cybertronian design hearkens to the movie version but with more human-like features, while his Earth design bears similarities to the "Super Megatron" form of his G1 incarnation. He wields his trademark fusion cannon (which is much larger than usual in this series), and carries a pair of swords. The swords do not resemble the katana in the image at right, taken from an earlier design. His original alternate mode is an unknown Cybertronian space vehicle, but becomes a tiltrotor aircraft once he is rebuilt to blend in with Earth.
In this series, Megatron has his own catchphrase: "Decepticons, transform and rise up!", contrasting Optimus Prime's classic "Autobots, transform and roll out!" line. A marked contrast between this and other series is that Megatron and Optimus Prime's antagonism is not personal: before their first battle, they had never met, and they continue to clash on the basis that they are on opposite sides rather than on any particularly personal hatred. Megatron does not even bother to remember Optimus's name until the series finale. Unlike several other series, Megatron does not upgrade into Galvatron, he remains as Megatron for the full three seasons.
This version is less tolerant of Starscream's treachery: after gaining his new body, he uses Sari Sumdac's key to slay Starscream, and takes great pleasure in killing him several times once he discovers that Starscream has become immortal due to a shard of the Allspark embedded in his head, and he would later destroy Starscream's replacement body, moments after he got it, once the treacherous Decepticon had outgrown his usefulness.
Megatron is also the most cool-headed among his other adaptations, despite being just as arrogant as his predecessors. Furthermore he doesn't consider Optimus of any actual importance until the climactic final battle on Earth, where Megatron finally acknowledged him as a threat by name.
The scale chart released for the series indicates Megatron stands about 35 feet tall.
In the Japanese translation of Transformers: Animated, the story has been changed to make it a prequel to the 2007 Transformers film. This makes this version of Megatron an earlier version of the film character.
