Galactic Republic
The character is the focus of Star Wars: Darth Plagueis, a "Legends" novel written by James Luceno and published on January 10, 2012. The novel covers the later life and machinations of Darth Plagueis (born Hego Damassk II), over a roughly fifty-year period pre-dating and culminating concurrently with the climax of "The Phantom Menace". The novel details Plagueis' overthrow of his own master Darth Tenebrous; his work as head of a powerful banking consortium on the Muun homeworld; his discovery, recruitment and training of the teenaged Palpatine of Naboo; and the efforts of Plagueis to undermine the Galactic Republic and ensure the dominance of the dark side of the Force. Even though Plagueis's plans to undermine the Galactic Republic were stopped by his death, Palpatine still succeeded in wiping out the Galactic Republic and driving the Jedi Order into ruins for his own plans.