Mag'ladroth

- The Void Dragon's Hidden Identity
"What I'd really like to control is not machines, but people."
- – Stephen Hawking
"I think, and my thoughts cross the barrier into the synapses of the machine—just as the good doctor intended. But what I cannot shake, and what hints at things to come, is that thoughts cross back. In my dreams the sensibility of the machine invades the periphery of my consciousness. Dark. Rigid. Cold. Alien. Evolution is at work here, but just what is evolving remains to be seen."
Introduction
Mag'ladroth, more commonly called The Void Dragon (or more controversially as the Omnissiah) is one of the main C'tan along with the Deceiver and the Nightbringer. He is the most powerful C'tan, and is most likely one of the only C'tan to have evaded capture by the Necon. The Void Dragon's "divine" portfolio includes destruction, mastery over Stormhawk, and technology. During the War in Heaven his warriors were by far the strongest and they could electrocute fools like the other Emperor from Star Wars. He made several gadgets to help shut down assholes who made use of the Warp.The pylons formerly keeping the Eye of Terror in check are the most notable and also the shootiest.
It's hard to overstate how insanely powerful Mag'ladroth. He survived a brawl with multiple Blackstone Fortresses, of all things. Y'know, the ones who can cause suns to explode. A weak, small shard of the Dragon kicked the absolute shit out of several Necron worlds when they tried to snatch it up. To put how terrifying this bastard is into perspective: the Deceiver, who was unafraid of talking to psychos like the Nightbringer and the Outsider and convincing them that cannibalism was a spiffy idea, actively avoid this ballin' Dragon. Fortunately he is not all-powerful. The Void Dragon, like all C'tan, is (more) vulnerable to the power of the warp, which is perhaps why the Empra was able to kick his ass. With the Master of Mankind mostly dead though, the Void Dragon is probably be the most powerful being in setting other than the gods of Chaos. This guy is not to be fucked with.
Identity
The Void Dragon, Omnissiah, and Dragon of Mars are most likely all the same creature. It helps to compare what we know for sure - Void Dragon control machines, has some kind of supernatural(?) power over machines, and his location is unknown. The Dragon of Mars was roughed up by the Emperor in the Medieval Ages and sealed inside Mars. The Omnissiah is worshipped by the Adeptus Mechanicus as the god of machines.
So, common traits - Most importantly, Voidy and the Omnissiah are both ancient demigods who control machines Voidy and the Dragon of Mars are both extremely dangerous "dragons" Dragon of Mars and Omnissiah are both on/in/of Mars
And what other people think - Some of the Mechanicus believe that their cult actually worships the Void Dragon, and treat the Necrons as heralds. The Necrons think something very, very important is inside of Mars, as they suicidally charged straight into Mars. Some CSMs think something deadly and destructive is inside of Mars. You think that all three entities are the same.
That's Awkward
This has profound and also very strange implications. The first is that the Adeptus Mechanicus are heretics of the highest level, who worship an actual xenos demigod. The second is the question of whether this influenced the development of Imperial technology
However what can be accepted is that if the Void Dragon fully awakens he will not only butt fuck the entire Imperium but also the Necrons for pulling such treachery during the War in Heaven and even Chaos once he gets his mojo running as his ability to control almost all forms of technology and machines means that he would give Chaos scrapcode a run for its money. that and its pretty much confirmed the pylons like the ones on Cadia that seal the Materium off from the Warp was his doing. To put how terrifying this bastard is into perspective: the Deceiver aka the C'Tan who was unafraid of talking to psychos like the Nightbringer and the Outsider and convincing them that cannibalism was a spiffy idea, ACTIVELY AVOIDED MAG'LADROTH. In other words the whole universe must roll for anal circumference with a -200 debuff
On a more hilarious note, for some reason, it can talk to human children, like Gamera, and sometimes involuntarily gives them power to heal and manipulate machinery like him. Soooo...the Void Dragon might secretly be in fact be the guardian of children all along?** . Just picturing a cosmic being from beyond conventional science having a soft spot for kids would generate much lulz and pedophile jokes on /tg/. Or maybe, just maybe, humanity earned his favor with the Dark Age of Technology and the Machine Cult***. Considering his powers. Which would be wonderfully hilarious. Even the Laughing God would be amazed at such a cosmic joke.
- 01010111 01100101 00100000 01110000 01101100 01100001 01111001 00100000 01100111 01100001 01101101 01100101 01110011 00100000 01100101 01110110 01100101 01110010 01111001 00100000 01101110 01101111 01110111 00100000 01100001 01101110 01100100 00100000 01110100 01101000 01100101 01101110 00101110 00100000 00100000 01001001 01100110 00100000 01101000 01100101 00100111 01100100 00100000 01101010 01110101 01110011 01110100 00100000 01101111 01100110 01100110 01100101 01110010 00100000 01101101 01100101 00100000 01110011 01101111 01101101 01100101 00100000 01100010 01110010 01100101 01100001 01101011 01100110 01100001 01110011 01110100 00100000 00101000 01001110 01101111 01110100 00100000 01110011 01101111 01110101 01101100 01110011 00100000 01110011 01110100 01100001 01110010 00100000 01100100 01110101 01110011 01110100 00100000 01101001 01110011 00100000 01100110 01101001 01101110 01100101 00100000 01110100 01101000 01100001 01101110 01101011 00100000 01111001 01101111 01110101 00100000 01110110 01100101 01110010 01111001 00100000 01101101 01110101 01100011 01101000 00101001 00100000 01001001 00100111 01100100 00100000 01100110 01101001 01111000 00100000 01101000 01101001 01110011 00100000 01101100 01101001 01110100 01110100 01101100 01100101 00100000 01100111 01101111 01101100 01100100 00100000 01110100 01101111 01101100 01101001 01100101 01110100
- 01000001 01101110 01100100 00100000 01110111 01101000 01111001 00100000 01101001 01110011 00100000 01110100 01101000 01100001 01110100 00100000 01110011 01110101 01110010 01110000 01110010 01101001 01110011 01101001 01101110 01100111 00111111
- 01010100 01101000 01100101 01111001 00100000 01100100 01101001 01100100 00101110
- 01000001 01101110 01100100 00100000 01110111 01101000 01111001 00100000 01101001 01110011 00100000 01110100 01101000 01100001 01110100 00100000 01110011 01110101 01110010 01110000 01110010 01101001 01110011 01101001 01101110 01100111 00111111
On the Tabletop
If you want to play him in an army, simply buy a Balrog or a Daemon Prince (make sure to give the latter wings), paint it suitably black, silver and green, and use it as a Transcendent C'tan. Have fun. Also, since you're controlling the pseudo-god of controlling machines, that also gives you the right to install a trojan on your opponent's phone so you can send exciting photos to his mom during the game.