Eragon is a teenage Dragon Rider leading the Varden's magical forces against the Empire. He doubts his own leadership abilities and worries about living up to expectations following the deaths of his mentors. He relies heavily on his empathy to guide his decisions, prioritizing the well-being of others even in combat.

Saphira is a highly intelligent blue dragon bonded to Eragon. She acts as his constant companion, fighting on the front lines while communicating telepathically. She takes great pride in her appearance and carefully grooms her scales before battles. Believing herself to be the last female of her kind, she carries a deep sense of isolation regarding her species' future.

Galbatorix is the authoritarian king of Alagaësia who destroyed the original order of Dragon Riders. He maintains absolute control over his empire by forcing subjects to swear magical oaths of fealty. He operates from the capital city of Urû’baen, hoarding the captured consciousnesses of deceased dragons to unnaturally amplify his own magical strength.

Nasuada is the young, resourceful commander of the Varden rebel army. She manages a fragile coalition of humans, dwarves, elves, and unconventional allies like Urgals to push toward the capital. She bears self-inflicted scars from a trial of leadership and remains entirely devoted to the rebellion's success, willingly risking her own safety for her people.

Arya is an Elf princess and a skilled warrior serving as an ambassador to the Varden. She trains extensively with Eragon to improve his sword-fighting techniques and accompanies him on dangerous infiltration missions. She maintains a practical, focused demeanor and places her duty to her people above personal attachments.

Murtagh is Eragon's half-brother and a fellow Dragon Rider. Raised in the royal court, he is magically bound by unbreakable oaths to serve the king against his will. He acts as an antagonist out of coercion, commanding his dragon Thorn in battles against the Varden while resenting his total lack of personal freedom.

Roran is Eragon's cousin and a highly respected captain within the Varden military. Lacking magical abilities, he relies on bold, unorthodox strategies to win battles, such as using flour-reinforced barges to break city gates. He fights fiercely to secure a safe future for his pregnant wife, Katrina.

Katrina is Roran's pregnant wife who travels with the Varden army. She supports her husband's military efforts while managing the domestic realities of camp life. She frequently worries about Roran's safety on the front lines.

Orik is the newly crowned king of the Dwarves and Eragon's foster brother. He brings his dwarven forces to support the siege of Dras-Leona. He practices traditional stone-crafting as a meditative ritual to maintain his focus during the war.

King Orrin is the ruler of Surda who provides crucial resources to the rebel army. As the war progresses, he becomes increasingly sullen and critical of Nasuada's decisions, particularly her willingness to form alliances with historically hostile groups.

Glaedr is an elder dragon who lost his physical body and now exists purely as an Eldunarí, a magical gem containing his consciousness. Mourning his fallen Rider, he initially isolates himself before returning to mentor Eragon and Saphira in advanced combat and mental defense techniques.

Queen Islanzadí is the regal leader of the Elves and Arya's mother. She commands the elven forces in the broader war effort and ultimately joins the final push into the capital city, fighting on the front lines against imperial commanders.

Angela is an eccentric, highly capable witch who travels with the Varden. She possesses unusual magical abilities and often confounds both allies and enemies with her unpredictable behavior. She shares a contentious history with the Werecats, having once cursed their king.

Elva is a young girl possessing dangerous magical abilities due to an improperly worded blessing Eragon gave her in the past. She is cursed to sense the incoming pain of everyone around her. This ability makes her a formidable presence, and Eragon fears her judgment deeply.

Grimrr Halfpaw is the king of the secretive Werecats. He approaches the Varden leadership to offer his people's assistance in the war. He holds a bitter grudge against Angela the witch over a past humiliation.

Nar Garzhvog is a proud Urgal chieftain who leads his warriors in support of the Varden. He seeks to share Urgal history and stories with humans to ensure his people's victories are remembered properly.

Solembum is a magical Werecat who accompanies Angela. He occasionally provides cryptic prophecies and guidance to Eragon, carrying ancient knowledge that has been magically erased from the minds of others.

Brom is Eragon's deceased mentor and biological father. He survives in the narrative through Saphira's shared memories and the magical ring he left behind to assist Eragon in emergencies.

Thorn is Murtagh's red dragon. Like his Rider, he is magically bound to serve the king and fights on the front lines against the Varden.

Shruikan is the king's massive, dark dragon. He is used to terrorize enemy forces through intimidation flights over the Varden encampments.

Lord Barst is the primary general commanding the imperial army. He fights with unnatural strength and endurance due to a dragon consciousness magically strapped to his chest.

Blödhgarm is an elven spellcaster specifically assigned to protect Eragon. He uses advanced illusion magic to conceal Eragon's movements and distract imperial forces.

Carn is a dedicated Varden magician who serves under Roran's command. He uses his magical abilities to confuse enemy tracking hounds and support infantry assaults.

The High Priest is the fanatical, self-mutilated leader of an underground cult in Dras-Leona. He seeks to execute Eragon in retaliation for the destruction of the cult's monstrous deities.

Sloan is Katrina's father and a former butcher who betrayed his home village. Blinded and exiled, he lives quietly among the Elves, isolated from his family.

Jeod is a scholar and an old friend of Brom. He assists the Varden by researching ancient texts to locate forgotten tunnels beneath enemy cities.