Sith Master Alternate Spellings:
Darth Seddious, Darth Sedius, Darth
Sidias, Darth Sedios, Darth Sideous,
Darth Sidius, Darth Sidios, Darth
Sedious, Darth Siddious Darth Sidies

Real Name: Dantius Palpatine

Species Race: Human

Homeworld: Naboo

Former Sith Master: Darth
Plagueis

Secret Dark Side Power:

The kyber crystal, forged by the
enigmatic and immortal Rodar Wizards,
provided Darth Sidious with the
ability to hide the dark side signature
of the Sith Lords from detection by
the Jedi Order and the kyber crystal
allowed Sidious to cloud the entire
light side of the Force, which thereby
allowed Sidious to greatly weaken
every single Jedi Master, Jedi Knight
and Jedi Padawan in the galaxy.

Honorary, Elected or Imperial
Positions:

Senator of Naboo Dantius Palpatine
Supreme Chancellor of the Old Republic
Dantius Palpatine
Emperor Palpatine over the Galactic
Empire.

When did Darth Sidious become a
full Sith Master?

Darth Sidious killed Darth Plagueis
in a most horrendous way while Darth
Plagueis was peacefully asleep.

Defeated Darth Plagueis on What
Planet: Skaggis

Former Alliance: Darth Sidious
had no prior dark side experience before
Darth Plagueis invited Sidious to become
the Sith Apprentice.

Sith Apprentices:

Darth Maul
Darth Rage
Darth Tyranus (Count Dooku)
Darth Vader (Anakin Skywalker)

How did Darth Sidious perish?

At the conclusion of Star Wars Episode 6
Return of the Jedi, the redeemed Anakin
Skywalker (more well known as Lord Darth
Vader) threw Darth Sidious into the
reactor core of the second death star.
Darth Sidious was instantly consumed
by this volatile power source, but the
kyber crystal survived to drift in deep
space for countless eons.