Darth Sidious a.k.a. Palpatine killed Darth Plegius.
Darth Maul was killed on Naboo by Obi-wan Kenobi.
because Obi-Wan Kenobi killed Darth Maul after Darth Maul killed Qui-gon Jin
Darth Vader actually is Luke's father.
On Naboo
Yes
Darth Maul Apprentice of Darth Sideous
Darth Bane was killed by his apprentice, Darth Zannah, while dueling.
Darth Vader, he killed the person who killed maul.
darth sidious was the apprentice and darth plagues the wise was the master until sidious killed his master and took on an apprentice of his own, darth maul.
Qui-Gon Jinn
Obi-Wan Kenobi was the last person to fight with Darth Maul. But Obi-Wan also killed Darth Maul.
Actually, Darth Vader is Luke Skywalker's father