Boromir: Member of the Fellowship of the Ring, son and heir to Denethor II of Gondor. Slain by Uruk-hai at Amon Hen.
C
Celeborn: Elf Lord of Lothlórien and the husband of Galadriel, Lady of the Golden Wood. He fought during the War of the Ring defending Lothlórien. Celeborn went to the Grey Havens and sailed for the Undying Lands at the Fourth Age.
Elendil: Númenorean nobleman whose sons founded the kingdoms of Arnor and Gondor in Middle-earth. Slain during the final battle between Sauron and the Last Alliance of Elves and Men.
Finwë and Míriel: Parents of Fëanor and leaders of the Noldorin migrants to the Undying Lands. Míriel dies at childbirth, while Finwë is slain by Morgoth.
Galadriel: Co-ruler of Lothlórien alongside her husband Celeborn. Relative of numerous notable characters in Tolkien's legendarium through bloodline and kinship.
Gandalf: A wizard. A member of the Fellowship of the Ring. Killed in battle in Moria, but returns to play a leading role in the defeat of Sauron.
Gil-galad: Last High King of the Noldor, who ruled during the Second Age. Formed the Last Alliance of Elves and Men with Elendil, and fell in combat against Sauron's forces.
Glorfindel: Noldorin elf-lord notable for his death and resurrection within Tolkien's legendarium.
Halbarad: A Dúnadan Ranger of the North, and one of Aragorn's comrades during the weeks leading up to Sauron's final demise.
I
Isildur: Son of Elendil, and co-founder of the kingdom of Gondor. Took the One Ring from Sauron at the end of the Second Age, but was later slain at the Disaster of the Gladden Fields.
K
Kíli: Son of Dís. Thorin Oakenshield’s nephew, son of his sister. Died during the Battle of Five Armies.
Morgoth: The first Dark Lord in Tolkien's legendarium, originally known as Melkor. Succeeded by Sauron after his defeat and banishment by the Valar following the War of Wrath.
Thingol: Elvenking of the Sindarin realm of Doriath in the First Age. Husband of Melian and father of Lúthien. Slain by dwarves over a dispute concerning one of the Silmarils.
Thorin Oakenshield: Dwarf noble who led the company of dwarves that retook Erebor from the dragon Smaug in The Hobbit. Slain during the Battle of the Five Armies.
Tom Bombadil: A mysterious figure who aided the hobbits during their departure from the Shire in The Fellowship of the Ring.
Treebeard: Leader of the Ents in The Lord of the Rings.
Tuor and Idril: Heroes of the First Age and parents of Eärendil as the second married union of Men and Elves. Left Middle-earth for Valinor, where Tuor is said to be counted amongst the Elven kindreds.
Túrin Turambar: A First Age hero who is embroiled in a tragic fate along with the rest of his family and ultimately committed suicide.
U
Ungoliant: Monstrous spider spirit. Progenitor of the Great Spiders and of Shelob.
W
Watcher in the Water: A mysterious aquatic creature that lives in a pool guarding the gates of Moria.