This is not official lore of terraria so don't complain but I hope it could one day be official

The Crimson, one of the most dangerous places in terraria they say but there are certain people who don't think that. The Crimson Rangers is the faction of the Crimson.

HOW THEY STARTED
Long ago, when the Crimson was 5 years old someone know as "The defender of the dark" saw the crimson and loved it. He built a house there and people saw the house there and started building houses in the crimson and the locals called them "The Crimson Rangers".

HOW THE GREW
The crimson started getting love by people around the world and dryads didn't like that. The Defender was getting quite rich and someone wanted to take some of the money and the Corruptors were born.

THE CRIMSON RANGERS NOW
The Crimson Rangers are still alive but they aren't popular and The Crimson Rangers are collapsing and may be gone soon.

The Corruptors are the faction of the coruption and are friends with the worms.



HOW THEY STARTED
The Crimson was getting popular by the Crimson Rangers and someone known as stormwell wanted some money. People joined the Corruptors and The Defender of the dark had some competiton. The Corruptors never got as popular as the Crimson rangers and they also had a few wars.

THE CORRUPTORS NOW
The Corruptors are now more popular than the Crimson Rangers but they really don't have many followers.

the unireapers is the faction of the hallow but these little evil scums don't want good for the world, they want bloodshed.

HOW THE DEATHS STARTED
A long time ago the hallow was a nice place with peaceful unicrons and friendly pixies and the world was a good place until 1943, That's when the unireapers started. The rainbow murder is the leader of the Unireapers and he thought the hallow could be used for the opposite of it's intention, murder and destruction. The rainbow murder secretly got a gun and on November 4th, 1943 he killed everyone in his town and confronted the leader of the hallow and it was a dryad. When the murder killed all the guards he shot the dryad called "The rainbow lover" he killed her and now ruled the hallow. Now that he was in control he ordered all pixies and unicorns and everything else to murder or kidnap anyone who got into the hallow. Queen slime who brought peace now brought murder. The Empress was the only one The rainbow murder was unable to get on his side and today the Empress is the only hope for the future of the hallow and defends prismatic lacewings. The rainbow murder created the rainbow gun and many more creation with the resources that the hallow had.


THE UNIREAPERS NOW
The Unireapers are one of the strongest factions in Terraria and people say the hallow is even deadlier than the corruption and crimson. almost everyone who enters the hallow is either kidnapped or murdered and everyone stays away, I wonder why the dryad likes the hallow so much. The Unireapers also might side with a few green people.

Cthulhu, a mythical being that in terraria is now "the moon lord".

HOW IT STARTED
Millions of years ago there were legends of a mythical being called "Cthulhu". This being was the ruler of Terraria before Yharim and the ones before. This being was praised and 1 specific follower was granted eternal life and that follower is The Lunatic Cultist.

This Cthulhu being is now the moon lord and is praised by many and the Lunatic is the leader of the faction.

The granite, a place with nothing it seems but that may not be right to think because people do live there and they are the granite elementals


HOW THEY STARTED
It was just a regular day in terraria and a miner was mining. As the miner was mining he fell into a hole and suddenly granite creatures were chasing him. The miner got to a dead end and the granite creatures approached him and the granite creatures said "we lost a king today and would like you to be our leader since humans can make a better community" and the miner agreed to join the granite creatures. The miner was brought to the castle of the granite king and now rules all granite kind. The miner had no idea how to rule all granite kind so he started making some granite creatures live on the surface and the ones that did like it wanted more and he brought more and more and people wanted to join the granite community. 1 year later and The granite elementals were around the world and had a lot of people in the granite elementals.

THE GRANITE ELEMENTALS NOW
The granite elementals now live mostly underground and have no shortage of people and granite creatures and that miner is still the leader of granite.

The marble, a nearly abandoned place only inhabited by hoplites but some time ago it was a kindom


HOW THEY STARTED
The marble was just a random place underground and nobody knows why it's there and nothing lived there. One day a random kid which was an inhabitant of the dungeon before it got its curse, fell in a hole. The kid was scared and found some light in a marble biome. the young boy was now a teenager and for 7 years had been eating spiders and whatever he could find. Suddenly random guy comes through a portal and says he almost got eaten by a purple worm thing but managed to get through the portal behind the thing and now he is here. The man said he was from 626 B.C but I was very hungry and decided to eat him and I took his clothes. Later I saw a traveler pass by and I told him I was from a gladiator from 626 B.C maybe he would want to join me and help me get out of this hole and the traveler said " sure I'll help you out and I'll tell some people about you. The man came back with his friends and we decided to make a faction called marble warriors and they agreed and now we went to the surface and got many people to join us and I became the leader of the marble biome and rule the marble warriors. Many people were in these roman warrior suits but only 1 was from 626 B.C the rest were from us. The marble warriors was once one of the biggest factions of terraria but now they don't exist and all the warriors from the marble warriors are now skeletons and medusa took control of the skeletons.


THE MARBLE WARRIORS NOW
The marble warriors don't exist and what remains of the warriors are the skeletons and armor and many people hunt for the one armor from an abandoned faction that once was powerful and they say it's from another dimension but the location is unknown.

The Lihzahrds is the faction of the lizard people and they live in underground jungle temples and love the jungle


HOW THEY STARTED
Lihzahrds are a rare creature that is a combination of human and lizard and they live in the jungle. The Lihzahrds were once friends with humans until the dryads forced the lihzahrds away from humans. The Lihzahrds found an abandoned underground temple and all took shelter there and would live there forever. The temples would keep getting raided so the Lihzahrds got plantera to help them and if anyone came to raid the temple plantera would kill them. Golem was built by the Lihzahrds to defend as well and would serve as their gaurdian and today the Lihzhrds don't need to worry about dying.


THE LIHZAHRDS NOW
The Lihzahrds are ruled by Yharim but he "died" by mutant so they will get a new leader soon but The Lihzahrds have no worries of dying, or do they?

The Dryads, once was the strongest faction in terraria and now there exists only 1 dryad now.


HOW THEY STARTED
When the corruption and crimson started, everything was becoming corruption/crimson and 1 group of humans in the jungle needed to do something and those were the Dryads. At first they were weak and couldn't use that much magic, but later on they had a chance to defeat both evils. Back then there were also male Dryads since the population of the Dryads back then was much larger than 1. The Dryads were seen as a guardian of the world that would stop evil, they were the strongest faction. The leader of the Dryads was just called D.F and she had many guards, strong forces, and almost billions of Dryads on her side. One day the mysterious Cthulhu being wanted to fight back and he did, and that may have destroyed the Dryads. With the nearly billions of Dryads they had they couldn't defeat Cthulhu but they did deal alotta damage. After the fight Cthulhu went into the moon and The Dryads now had only 1,384 Dryads and the D.F was mad.


THE DRYADS NOW
After the war, the rest of the Dryads died and only one is alive and there are rumors that D.F is still alive but somewhere else.

The Red Horns, the faction of the underworld



HOW THEY STARTED
While a miner was digging looking for diamonds he found something unexpected, The underworld. He fell on top of ash and a demon looked at him. The demon said he was the devil and said this "If you give me your soul, I will give you money, fame, and power in the world, your life will be great" The miner agreed to give his soul to the devil and The Red Horns started. The miner went the surface and he saw people and told them to follow him and the miner lead them to the underworld and now they are part of the Red Horns. More and more people would join the Red Horns and houses were built down there and people started becoming demon like. Each member of the Red Horns would kill and steal or maybe even worse things and the Red Horns was one of the worst factions in terraria. One day a tax collector went down there and he became part of the Red Horns and people say he hasn't turned full demon.




THE RED HORNS NOW
The Red Horns don't exist now but there are some people that were saved from becoming a demon, like the tax collector.

The TPG, The Terraria Provisional Goverment, The Ruler of terraria and the ruler "forever"


HOW THEY STARTED
The TPG is run by the leaders of terraria, and that includes Yharim, D.F, The Rainbow Murder, The Defender of the dark, Corruptors, Granite Elementals, and all the other strong forces of terraria. The TPG controls Terraria and has been around since the start of Terraria. The TPG will always change and the plans for the TPG is unknown



THE TPG NOW
The TPG is the leader right now, just right now.........

The martians, these are aliens from an unknown origin or from where they come from.


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The martians, we are not sure what they are but they seem to want info about our planet and they get very mad when you destroy a probe. The leader is unknown and no one knows in what they say. We will most likely "never" know what these aliens want from us, but we'll have to wait, only a few thousand years.

THE MARTIANS NOW
The Martians were in the 3rd war for Terraria and the Martian leader died in the war and have supported the TPG ever since to take down the Lihzahrds, and the Unireapers.........