This does contain some spoilers, like who dies, so be prepared! And EVERYONE that had a name, including horses and whatnot, are listed here.

The list for order of appearance has only the characters that had an physical part in the story, not the people that were mentioned only in passing (such as Mirianna Ohmsford - Par and Coll's mother). The one that has the characters organized in alphabetical order has all of them.

Allanon: the last Druid and Bremen's son who had vanished for twenty years, he goes with Brin on her quest to destroy the Ildatch. A Jachyra confronted him and both died from each other; before his death, Allanon gave Brin a blood trust.
Amberle Elessedil: aided by Wil Ohmsford in her search for the Bloodfire, she is now the present Ellcrys.
Ander Elessedil: Edain's father, the present Elven King.
Bremen: a shade who was once a Druid; Allanon asks him for help.
Brin Ohmsford: Wil and Eretria's daughter; she has the magic of the wishsong of reality. She goes into the Maelmord and destroys the Ildatch. Brin is the only person to ever have gotten the better of the Grimpond.
Brona: the Warlock Lord; destroyed by Shea Ohmsford seventy years ago.
Browork: Elder and citizen of Culhaven, he is the First of the Council.
Cogline: a crazy once-Druid who studies science, he joins Brin and Rone on their journey to the Maelmord and shows them the way.
Edain Elessedil: Ander's son and Prince of Arborlon, he goes with Jair. When his leg was shattered he stayed behind with Elb to stall the Gnome attack, dying later.
Elb Foraker: a Dwarf; he goes with Jair; when his head was cut through he stayed behind with Edain to stall the Gnome attack, dying later.
Eretria: Brin and Jair's mother.
Eventine Elessedil: Edain's grandfather; one of the great Elven Kings.
Flick Ohmsford: Shea's brother; Brin and Jair's great-granduncle.
Garet Jax: more commonly known as the "Weapons Master", he goes with Jair to Heaven's Well. Upon reaching the well, he confronted a Jachyra and fought it. He was found dead later while the Jachyra was nowhere to be seen.
Grimpond: a shade that is trapped in a pond near Hearthstone; Brin asks it for help and gets the better of it.
Helt: a Borderman, he goes with Jair. After being poisoned by one of the monsters, he jammed the machinery of the drop-gate so the others could escape safely while he sacrificed himself.
Ildatch: a book of evil; Brona and the Mord Wraiths drew their power from it and became subverted; Brin Ohmsford destroyed it before becoming subverted herself.
Jair Ohmsford: Brin's brother; he has the magic of the wishsong of illusion. The King of the Silver River comes to him and gives him the vision crystal and Silver Dust to rid Heaven's Well of the Mord Wraith's poison.
Jeft: a woodsman that told Brin and Rone about Cogline.
Jerle Shannara: the receiver of the Sword of Shannara in the Second War of the Races; one of the great Elven Kings.
Kimber Boh: Cogline's adopted granddaughter; she joins Brin and Rone on their journey to the Maelmord.
King of the Silver River: living since the time of Faerie, he appears to Jair and gives him the Silver Dust and the vision crystal. He also took the Elfstones but returned them later after Jair completed his quest.
Maelmord: the living jungle that protects the Ildatch; it was destroyed along with the book.
Menion Leah: aided Shea in his quest to destroy the Warlock Lord; Rone's great-grandfather.
Radhomm: commander of the Capaal garrison; the Kraken killed him.
Raybur: a Dwarf King in the Second War of the Races.
Rone Leah: Brin's protector; he is the first person to wield the magic of the Sword of Leah after Allanon told him to dip the blade of the Sword in the waters of the Hadeshorn.
Shea Ohmsford: the destroyer of the Warlock Lord and Brin and Jair's great-grandfather.
Slanter: a bilingual Gnome and a Tracker, he goes with Jair to Heaven's Well and is the only one besides Jair to survive.
Spilk: a Gnome Sedt who kept Jair captive; a Mord Wraith kills him.
Stebb: a trader and owner of the Rooker Line Trading Center; he helped Brin and Rone.
Stythys: a Mwellret that took Jair captive; he fell into a Prock where he died.
Whisper: Cogline and Kimber's sometimes-disappearing moor cat; he saves Brin three times.
Wil Ohmsford: Brin and Jair's father.