Featuring a kidnapped dragonqueen, multiple personalities, conspiracies and secrets lurking in every corner, Day of the Dragon focuses on the journey of the mage Rhonin in a time of war between the humans and the orcs. Aided by the dwarf Falstad and elven ranger Vereesa Windrunner, Rhonin sets out on what many would consider an impossible task into the orc-held lands of Khaz Modan to uncover what he can during a dark and dangerous time.
| Alexstrasza | The Life-Binder, red leviathan that works to safeguard all living creatures within the world. | Realm | War of the Ancients |
| Deathwing | As Neltharion, he slips into madness and forges the Demon Soul. His ruthless acts cause him to be known as Deathwing. In Day of the Dragon, he captured Rhonin and led him to the orcs that held Alexstrasza to scare the orcs into putting Alexstrasza into the open so he could kill her and any eggs she had. This plan seemed solid, except for the rallying of the other aspect dragons, the destruction of the Demon Soul that was hoarding most of the other dragons' power, and the fact that Rhonin caught on to his plan. In human form, he is Lord Prestor. | Realm | War of the Ancients |
| Dragonreaver | Falstad | A dwarf of Aerie, not known to get along with hill dwarves. Originally introduced as a gryphon rider, he ends up traveling with Vereesa to locate Rhonin. | none | |
| Korialstrasz | Dragon form of Krasus, consort to Alexstrasza. See Krasus. | none | War of the Ancients |
| Krasus | Human in appearance, powerful mage that guides Rhonin on his quest. See Korialstrasz. | none | War of the Ancients |
| Malygos the Blue | A blue dragon. Spell-Weaver and the guardian of magic and hidden arcanum. | Realm | Sunwell Trilogy, War of the Ancients |
| Nozdormu | Known as the Timeless One, guards time itself and polices the ever-spinning pathways of fate and destiny. | NPC, Item | War of the Ancients |
| Rhonin | Sent on what many saw as a 'suicide mission', he managed to destroy the Demon Soul and free the Dragonqueen from Nekros' command. Sent back in time to the War of the Ancients./td> | | War of the Ancients |
| Windrunner | Vereesa | Long silver-white hair, sky blue almond-shaped eyes, lengthy pointed ears. One of the three cover characters of Day of the Dragon, sent along to guard Rohnin's passage to Khaz Modan. When they become separated, she continues with a dwarf (Falstad Dragonreaver) to find and rescue Rohnin from the dragon Deathwing. A very minor role in this book. | Realm | |
| Ysera | Green dragon in charge of watching over the growing wilds of the world (The Dreamer). | Realm x2 (Ysera, Emerald Dream) | War of the Ancients |
| Arthas | Prince, and Terenas' only son. Makes a very limited appearance in Day of the Dragon, is mentioned in the Sunwell Trilogy: Dragon Hunt | NPC, Item, Item, Item, Realm | Sunwell Trilogy: Dragon Hunt |
| Blackhand | Known as The Destroyer, he is a particularly depraved and vicious orc warlord. | NPC, Realm | |
| Brogas | Stout and young orc. Accompanies Tyran the dragon, warns Nekros of Tyran's failing health. | none | |
| Calia | Princess, daughter of Terenas, she is mentioned only in passing. | none | |
| Christoff | A knight in the troop of Lord Duncan Senturus. | none | |
| Drenden | A mage of Dalaran who attempted to scan 'Lord Prestor' and came up blank. This led to the determination he was nearly as powerful as the legendary Medivh. | none | |
| Faol | Alonsus | Archbishop | none | |
| Gimmel | A hill dwarf, helps rescue Vereesa and Falstad from the trolls. | none | |
| Gree | Leader of the trolls. One of the trolls that captured Vereesa and Falstad. | none | |
| Greymane | Genn | Leader of Gilneas | Realm | |
| Hulg | Troll traveling with Gree's band, failed to return from an excursion away from camp - likely victim of Rom and his dwarven associates. | none | |
| Jakob | A knight in the troop of Lord Duncan Senturus. | none | |
| Joj | Part of Rom's group, helped to save Vereesa and Falstad from trolls before falling. (deceased). | none | |
| Kryll | goblin who works with Deathwing, and is briefly captured by Vereesa and Falstad.(deceased). | none | |
| Meric | A knight in the troop of Lord Duncan Senturus. | none | |
| Modera | A mage of Dalaran who attempted to scan 'Lord Prestor' and came up blank. This led to the determination he was nearly as powerful as the legendary Medivh. | none | |
| Molock | Dwarf gryphon rider. | none | |
| Narn | Part of Rom's group, helped to save Vereesa and Falstad from trolls - was badly wounded and could not journey on. | none | |
| Nullyn | Zepplin pilot used to shuttle Rhonin to Grim Batol with Voyd. (deceased). | none | |
| Perenolde | | Mentioned in passing. | Realm | |
| Prestor | | Lord, see Darkwing. | none | |
| Proudmoore | Jaina | Powerful mage, the leader of the humans in the wake of the war against The Burning Legion. Struck alliance with Thrall. | NPC, Item, Realm | Day of the Dragon |
| Roland | A knight in the troop of Lord Duncan Senturus. | none | |
| Rom | Carrier of Krasus' tailsman, one of the hill dwarves. A gryphon rider, he leads Falstad and Vereesa to Grim Batol before vanishing. | none | |
| Senturus | Duncan | A member of the Silver Hand, he intercepted Rhonin and Vereesa on their way to Hasic. After seeing them there and noting the devistated condition it was in, he continued with them towards Khaz Modan but was killed in a dragon attack. (deceased) | none | |
| Shnel | One of the trolls that captured Vereesa and Falstad. | none | |
| Skullcrusher | Nekros | Keeper of Demon Soul, jailor of Alexstrasza | Realm | |
| Torgus | A dragon rider, likely killed in the Grim Batol battle. | none | |
| Tyran | Consort to Alexstrasza while in captivity from the orcs, ailing dragon. | none | |
| Trollbane | Thoras | Lord of Stromgarde, opposed to the orcs. | none | |
| Vorsh | One of the trolls that captured Vereesa and Falstad. | none | |
| Voyd | Zepplin pilot used to shuttle Rhonin to Grim Batol with Nullyn. (deceased) | none | |
| Zuluhed | Uncovered the artifact that he later named Demon Soul, passed it to Nekros | Realm | |
