Akatsuki (Earth-2356)

"We're all sentient beings, so we know that motives for war are of no concern. Religion, ideology, resources, land, grudges, love, or just because they crave it... No matter how pathetic the reason, anything's enough to start a new war. War will never cease to exist. Sentient nature pursues strife, and we are their remedy."

- Pain

The Akatsuki was a group of rogue Jedi that existed outside the Jedi Order's system and jurisdiction during the closing years of the Galactic Republic. Over the course of several decades, the Akatsuki took different forms and was led by different individuals. Though each iteration was viewed as either separatists or terrorists, all sought to make the galaxy a better place through their own means. The Akatsuki tended to have multiple lairs spread across the galaxy, inaccessible either due to their remoteness or various security measures that protected them. Before and during the Clone Wars, the Akatsuki was secretly led by the Dark Lord of the Sith Darth Sidious, leading the Confederacy of Independent Systems against the Galactic Republic and the Jedi before their downfall at Sidious' design.

Yahiko's Akatsuki
The initial concept of a group similar to the Akatsuki was devised by Darth Plagueis, a powerful Dark Lord of the Sith, as part of his plan to revive the Sith by establishing the first Galactic Empire and bring in the extinction of the Jedi and the downfall of the Galactic Republic. The Akatsuki was originally founded by Yahiko during the Third Stark Hyperspace War alongside his childhood friends, Nagato and Konan. The trio of Force-sensitive children were trained in the ways of the Force years prior by the Jedi Master Jiraiya in order for them to survive. As inhabitants of the Outer Rim planet Ame who had been orphaned by the Second Stark Hyperspace War, the three created the Akatsuki as a way to bring peace to their homeworld, which too often got caught in the crossfire of the Galactic Republic and the Core Worlds' many conflicts. In time, the three were approached by Sheev Palpatine, who introduced himself as Darth Sidious. Sidious claimed Nagato was the reincarnation of the Sage of Six Paths and offered to teach him to control the power of his Rinnegan, though Yahiko distrusted him and prompted Nagato to turn down his offer. Nevertheless, Sidious would later claim that it was he who encouraged Yahiko to form the Akatsuki, unbeknownst to Konan.

Source

 * https://naruto.fandom.com/wiki/Akatsuki.