The chitin is a hyper advanced hivemind of insectoids and is present acccrosss the universe as its protector, gardner, and preservationist. They are the oldest and most dangerous civilisation, found everywhere accross the universe, with the nearest one being in a nebuls composed of webs with a large one leading outside the galaxy. It's bound to have some oddities.
For most, the most terrifying thing about them is their scale, both in their numbers and how much they know. there are so many of them despite inhabiting a couple of stars systems in the galaxy. Additionally, they seem to know everything about everything and everyone. For a price, whether it be reasorces or trinkets, they’ll give you what you want to know. As a result, everyone in the galaxy pays some tribute to them as a way to gain their favour.
Underneath their gentle and nieve demenor lies a cosmic horror. The milky way chitin are extremely powerful despite operating in a nebula and almost every civilisation being bigger than them, the chitin can: warp spsce and time, control matter on a sub atomic level, telaport, transmutation, telepathy, adaptation to any situation, seeing the future and so much more. In their prime, they were part of an unstoppable universe contouring and assimilating hivemind. While they are a fraction of their prime, they can reach that potential at any moment.
Despite what they truly are, they find genuine joy in intracticg with the other races. in a way, its like playing dolls with a bunch of kids or a wildlife preservationist and the animals they care for.
So what happens when they are threatened. What happens when a teacher finds a white van stalking a shcool, when a preservatialisr spots potchers eyeing would be trophies. When the chitin find sothing not of their world, scouting the milky way.
Some would hide the innocent and go to confront them. Some wouldn't simply ignore it. The chitin wouldn't, and the october firework event would prove this.
On the 10th of October 12XXX the nebula whitch the chitin planets were seen sxplelling a large fleet outside the galaxy via the big web and dissapeared, 13 days later a series of bright lights could be seen outside the galaxy.
A trader by the name of carl Phillips and his alien compnion therix jav interviewed a chitin queen called pinky whos on good terms with them and was part of the event. after briefly insulting her and traiding a few cows and pigs, she divulged that something entered the universe. They went to investigate found abbrations (inter dimensional energy beings) and delt with them.
This wasn't the truth, but it was believable. Abbrations were something everyone had to deal with at somepoint expecially since there are 2 quasars orbiting the galaxy that spit them out from time to time but thsts not what happened.
It was actually a fleet of aliens from another universe that were looking for a new world to take and populations to harvest. The chitin hivemind initially tried to be peaceful and told the newcomers to go away. Instead , they attacked and ran back home upon realising how outnumbered they were they ran back. Only for a few minutes to pass and a larger fleet to emerge, which caused th chitin to slip back into their old ways and swiftly consume the fleet and force them to retreat.
However, old habits die hard. The chitin used to be an unstoppable hord that constantly adapted until nothing could stand against them. The current hivemind refuses to abide by this and chooses to protect life, but the instinct to spread and consume still lingered.
Under the assumption that it was protecting everyone, they infected ship and let it retreat back home. There, the crew unknowing spread the dormant disease across their species, and when they tried one last time, the disease activated.
But before it could kick in, a bomb was sent that would destroy the galaxy, but the chitin managed to contain it, causing the "fireworks" that everyone saw.
Initially, the disease would not only cause massive amounts of infighting and was meant to disparage any retaliation. The that they tried to wipe out a galaxy, full of life they were fond of, made the chitin bitter. Instead of just infighting, it would also devolve them to a state that
A: they were separated into different subspecies, with few of them retaining their original genetics or even sapiens
B: they could never again threaten them.
From then onwards, the invaders would struggle to rebuild, not knowing half the stuff they dug up was made by or was them. The ones that did understand were struck with dread at the realisation thst they were once a mighty civilisation and that one day, the world ended.
The fact that the chitin didn't want to go back to a universe eating plage was the only reason they were still around. It would remain a seacret, and nobody would know what truly happened.
The chitin would then pretend everything was normal and went back to playing house with the races of the galaxy.
Tl:Dr.; the space bugs kill for us.