You'll never found a more loyal Decepticon to the cause than Soundwave. An extremely and unusually powerful telepathic Outlier, Soundwave fell under Megatron's sway and became dedicated to him and his cause to create a galaxy built on the concept of Cybertronian equality, remaining loyal even as that cause began to be forgotten in favor of conquest and totalitarianism. When Megatron defected to the Autobots, Soundwave realized just how much the Decepticons had lost their way and teamed with Galvatron to rebuild the Decepticons in the name of peace only for Galvatron to try and create a new empire. Forming an alliance with Optimus Prime, the two overthrew the tyrant and now work together to try and uplift Earth into the cosmic community.
While he first viewed humans as nothing more than short lived and expendable drones, he's slowly starting to get better around them. Slowly.
Soundwave was born a superpowered Outlier, giving him incredibly powerful hearing that was strong enough that he could even hear the thoughts of others. Disoriented by his powers, Soundwave spent his early life living in the slums of Cybertron’s Dead End. Eventually, he met Ravage, Laserbeak, and Buzzsaw, a trio of bestial Transformers who helped teach him to control his abilities. Eventually, Soundwave earned the attention of Ratbat, a senator who sought to use Soundwave’s telepathy for political gain. Though he was disgusted by Ratbat’s Functionist views towards his friends, he still accepted his offer of employment. Through his job, Soundwave would eventually meet the political activist/miner turned gladiator Megatron. With his telepathic abilities allowing him to see that Megatron truly desired equality for all Cybertronians, Soundwave became one of the earliest and most loyal followers of Megatron’s Decepticon movement, helping him overthrow Cybertron's corrupt government.
Circa 1984 (roughly four million years into the Autobot-Decepticon war), Soundwave followed a group of Decepticons Megatron had asked him to spy on to Earth. After he arrived on the planet, however, he became distracted by a signal being emitted by the mysterious Talisman. Following the signal to its source, he came into conflict with the Adventure Team, who quickly proved to be a big enough nuisance that he decided the artifact was more trouble than it was worth. After coming into conflict with the Decepticons he was tracking, Soundwave was locked into his cassette player alternate mode for over 20 years until his fellow Decepticon Shockwave freed him. Back to normal, Soundwave was able to return to Megatron’s side and play a key part in his attempted conquest of Earth.
After the war ended and a repentant Megatron announced that he had decided to become an Autobot, Soundwave was shocked that the man he had trusted and loyally served for so long could betray the cause he founded like that. This eventually made Soundwave realize just how much the Decepticons had lost their way, prompting him to take command of their remaining forces alongside Galvatron in hopes of redeeming the faction. Though he regarded humans as lesser lifeforms, Soundwave sought to make peace with the people of Earth in hopes of gaining access to the planet’s energon supplies. Making contact with the newly formed Earth Defense Command, Soundwave informed them that the Decepticons had abandoned their warlike ways and successfully convinced them to help in the construction of a Decepticon commune in orbit of Jupiter.
Soundwave would soon discover that Galvatron hadn’t undergone the same change of heart he had and that the ancient warlord tricked him so that he could make his own attempt at conquering Earth. Though he was furious at Galvatron’s deception, Soundwave refused to help Optimus Prime fight back against him until the Autobot leader blackmailed him with evidence of Soundwave’s role in the murder of another Decepticon. Backed into a corner, Soundwave agreed to help and in doing so came to realize humanity wasn’t as dissimilar from Cybertronians as he had once thought. After this revelation, Soundwave began willingly working with Optimus, hoping to make up for all the suffering he had once caused humanity and countless other organic races over the course of the war.
Now a trusted ally of Optimus Prime, Soundwave stuck close to the Autobot leader's side, helping him and his troops deal with conflicts involving G.I. Joe (who had come to replace the EDC), the Space Knight Rom, and the Micronauts. As a testament to his newfound tolerance for humanity, Soundwave teamed up with G.I. Joe member Mainframe and Matt Trakker of M.A.S.K. as well as Rom and the Micronauts to defeat the monstrous hybrid of Baron Karza and the Dire Wraiths, each member of the unlikely team using their unique abilities to force the Microspacial dictator into Autobot City's spacebridge and return him to his home dimension. Though he had once expressed some sympathy for the Space Knight, relating to his desire to overlook morality for the sake of expediency, Soundwave remained distrustful of Rom and his methods as the Autobots and G.I. Joe watched him fly off to return to his mission.
Aw Yeah Revolution!
- Soundwave at the TFWiki