If by Episode 3 you mean Revenge of the Sith, then no.
Darth Maul Apprentice of Darth Sideous
There are multiple, but you probably mean Darth Maul. He has a red double-saber, and horns on his head. Episode I.
Darth Maul was killed on the planet of Tatooine by Obi-Wan Kenobi in Star Wars Episode I: The Phantom Menace.
Episode One.Obviously.
Episode 1: The Phantom Menace
Darth Maul.
Throughout the six movies, Chancellor Palpatine aka Darth Sidious is the main antagonist. Each individual movie has its own resolved antagonist as well. Episode 1: Darth Maul Episode 2: Darth Tyranus aka Count Dooku Episode 3: General Grievous Episode 4-6: Darth Vader and Emperor Palpatine (Darth Sidious)
Qui Gon Jinn was killed on Naboo by Darth Maul in Episode I: The Phantom Menace.
Darth Maul is played by: Ray Park.
You can get a Darth maul lightsaber at www.wookiepedia.com. Click on the scroll-down that says >Star Wars, click on lightsabers. Search Darth Maul and you can get one for $36.51 on the third page of Darth Maul lightsabers
If you mean Darth Maul in Episode 1: The Phantom Menace, he actually didn't say a word during the duel with Qui-Gon Jinn and Obi-Wan Kenobi
He was played by Ray Park and voiced by Peter Serafinowicz.