The Other Side, What Is It Exactly?

The Other Side has a big role in the series, whether its mentioned or a character actually goes into it.
But, we don't know really much about it in depth, so what is it?

It first made its appearance in the very first story, The Chosen One. Where the wand that Bluie pulls out and becomes the chosen one lies, and where The Evil Starfish was the king of. It plays a big role in this story, afterwards, it doesn't make much a appearance. (EX: AOT Parts 1 + 2, DTO and The Nether) but the latest stories such as AOAC, The Other Side makes a big appearance, as for Bella, Light, Penny, Tsubaki and Nightpaw went into The Other Side to help search for TwilightClans former Leader, Hide/Grandpa Turtle.

History of The Other Side-The Other Side is an ancient realm from trillions of years ago, created by many animal god-like/spirits. It came before Earth was created.
As it was once populated with many animals, it was only then The Evil Starfish/Hades took over The Other Side merely thousands of years ago, driving those people out of The Other Side and wounding up on Earth. Going their separate ways.
It was only then twenty years ago- When Miles began his Other Side Project, where he would create the portal to The Other Side. After finishing it, The Wise Dragon volunteered to step into the portal and test it out. When he did, The Wise Dragon became the first Chosen One. Due to leaving The Other Side unexpectedly after being there for too long, he lost his place of being The Chosen One. After the second chosen one (an unnamed wolf) had lost their place, Bluie then became the next Chosen One. After Bluie and the Elite Warriors of Webclan defeated The Evil Starfish, The Other Side was abandoned for a very long time. KaruClan sealed themselves away in there for only a little while after Webclan defeated them for the very first time, kidnapping Noodle from his jail cell and then killing him. They then went back out to Earth after a month passed, Bella, Light, Penny, Tsubaki and Nightpaw went into The Other Side to help search for TwilightClans former Leader, Hide/Grandpa Turtle. That's when Nightpaw found Noodles dead body, and when they also found Grandpa Turtle, as well.

There has been no events so far including The Other Side in the latest story, come back soon to see if there are any updates.