Main Characters:
* Count Olaf: He meets his end in various ways throughout the series, but is ultimately killed by the Baudelaire children in "The End."
Other Characters:
* The Baudelaire Parents: They perish in a fire at the beginning of the series.
* Mr. Poe: He is killed in a car accident.
* Count Olaf's Henchmen: Many of Olaf's accomplices, including his "cousins" and other followers, die in various accidents and mishaps throughout the series.
* The Quagmire Triplets: It is strongly implied that all three triplets, Duncan, Isadora, and Quigley, die in various accidents (likely orchestrated by Olaf).
* The Baudelaires' Parents' Friends: Many of the friends and family of the Baudelaire parents, who were all invited to the fire that claimed their lives, are killed in the fire.
Important Note: Lemony Snicket often uses vague wording or ambiguous descriptions regarding deaths, so it's not always clear if a character is truly deceased or simply missing or presumed dead.
Also, be aware that some of these deaths are quite gruesome and dark.
If you are interested in learning more, I suggest reading the books or watching the TV show. Be prepared for a series full of tragedy and suspense!