So quite literally, his name means "Elf of the Wand", although he technically resembles that of a Man, instead of an Elf. Gandalf's original name of "Bladorthin" was not entirely lost though, as Tolkien eventually used it to name an ancient king, later in the books.
As one of the Maiar, Gandalf was not a mortal Man but an angelic being who had taken human form. As one of those spirits, Olórin was in service to the Creator (Eru Ilúvatar) and the Creator's 'Secret Fire'.
Círdan kept Narya after Gil-galad's death. At some point during the Third Age, Círdan passed the Ring to the Wizard Gandalf to aid him in his labours, having recognised his true nature as one of the Maiar from Valinor.
He came to Middle Earth in the guise of an old man, showing age that Elves do not, except perhaps Cirdan. But then over hundreds of years, he never aged any more. His true nature was a mystery to most elves and men alike. As it was intended to be.
Legolas is a Sindarin Elf from the Woodland Realm of Northern Mirkwood. His father, Thranduil, is the King of the Silvan Elves living in that realm, making Legolas the Prince of Mirkwood.
Aragorn is not half Elf, although he is a descendant of Elros, who is half Elf (and the brother of Elrond, the half-Elf who raised him), which explains why Aragorn's life span is unusually long.
Frodo Baggins, fictional character, a hobbit (one of a race of mythical beings who are characterized as small in stature, good-natured, and inordinately fond of creature comforts) and the hero of the three-part novel The Lord of the Rings (1954–55) by J.R.R. Tolkien.
The Inverse Analysis — In Tolkien's legendarium, the Three Elven Rings of Power are eventually given to Galadriel, Gil-galad (Benjamin Walker), and Círdan the Shipwright.
The hobbits are perhaps the only creatures in The Lord Of The Rings that can stand against the power of the Ring because of their love of all things good and simple. Not even the elves or wizards are able to fully resist the draw of power or evil.
The most important rulers of the Elves, though, descended from the three ambassadors who had been first among the Children of Ilúvatar to visit the Blessed Realm: Ingwë, Finwë and Elwë. Ingwë of the Vanyar was considered greatest of all the Elven-kings, and given the title High King of the Elves.
Arwen isn't necessarily dying because of the Ring, but now that she is mortal, she is dying through the slow decaying of time. Arwen also faces the same fate as all those in Middle Earth should the Ring Bearer fail his mission. So in that way, her fate is tied to the Ring.
Frodo Baggins was a hobbit of the Third Age, the most famous of all Hobbits in the histories for his leading role in the Quest of the Ring.
Gandalf, like all the five wizards of Middle-earth, was a Maia, an angelic spirit of the same order as Sauron.
Frodo is a hobbit of the Shire who inherits the One Ring from his cousin Bilbo Baggins, described familiarly as "uncle", and undertakes the quest to destroy it in the fires of Mount Doom in Mordor. He is mentioned in Tolkien's posthumously published works, The Silmarillion and Unfinished Tales.
Elrond Half-elven is a fictional character in J. R. R. Tolkien's Middle-earth legendarium. Both of his parents, Eärendil and Elwing, were half-elven, having both Men and Elves as ancestors.
The rings were: 1) Vilya: Given to Gil-galad, the last of the High-elven kings of Middle-earth.
Arwen is one of the half-elven who lived during the Third Age; her father was Elrond half-elven, lord of the Elvish sanctuary of Rivendell, while her mother was the Elf Celebrian, daughter of the Elf-queen Galadriel, ruler of Lothlórien.
As one of the nine Nazgûl, Isildur was forced to serve the Dark Lord for all time until he was defeated and freed by Talion. The ranger later claimed his ring to survive after Celebrimbor abandoned him and eventually took Isildur's place among the Nazgûl after holding back Sauron's forces for decades.
Arwen was her granddaughter
Galadriel and Celeborn had a daughter named Celebrian, who married Elrond and became the mother of Arwen (as well as her brothers, Elladan and Elrohir).
There is probably no blood relationship. Elrond is of higher birth--he is descended from two of the three ambassadors of the Eldar who were taken by the Valar to see the Two Trees in their glory, and who afterward became Kings (Finwe King of the Noldor and Elwe aka Elu Thingol, King of the Sindar).