He dies several times. His most notable death is in the 5th season, Sailor Stars, where he remains dead for the entire season until the last 5 minutes of the final episode.
He doesn't die in an episode, he dies during the timeskip. Lucy finds out about it in episode 124.
Season 3 Episode 25 when Cosmo dies. After she dies, her spirit finds Tails on the ship and kisses him.
Mulder and Scully lost time in the pilot episode of The X-Files. It happens when they are driving on a road and the car dies. Years later Mulder finds himself in the same location.
There is no episode of Glee where Rachel dies.
In episode 114 of Naruto Shippuden, Sasuke absorbs Orochimaru into his body.
*WARNING SPOILER!* Darien/Mamoru is actually dead. *sniff* Galaxia stole his Star Seed when he was on the airplane on his way to America. Sailor Moon finds out in episode 197 or so. He finally returns at the end of episode 200.
He doesn't die in an episode, he dies during the timeskip. Lucy finds out about it in episode 124.
The 8th episode, is "Kitty Amazing." It's about red who finds a cat that's so cute, everyone who sees it dies.
Season 3 Episode 25 when Cosmo dies. After she dies, her spirit finds Tails on the ship and kisses him.
the episode is not out yet but he dies on chapter 383 in the manga
the last episode
Mulder and Scully lost time in the pilot episode of The X-Files. It happens when they are driving on a road and the car dies. Years later Mulder finds himself in the same location.
There is no episode of Glee where Rachel dies.
In episode 114 of Naruto Shippuden, Sasuke absorbs Orochimaru into his body.
In the last episode of Breaking Bad Walter White dies .
season 1; episode 22
Prue dies in Season 3 Episode 22- All Hell Breaks Loose!!