Matthias is a clumsy young orphan mouse serving as a novice in the Order of Redwall. Unlike the pacifist monks who raised him, he harbors dreams of defending his home like the legendary knights of old. He lacks confidence initially but possesses a good heart, natural courage, and a strong sense of duty toward his fellow woodland creatures. His small size masks a fierce determination to protect the vulnerable.

Cluny is a massive, one-eyed bilge rat who commands a brutal horde of cutthroats. He is heavily scarred and fights using a poisonous dart affixed to the tip of his whip-like tail. He covets the peaceful abbey for his own fortress, viewing the pacifist woodland creatures as weak targets ripe for conquest. He isolates himself from his troops, relying entirely on fear and greed to maintain control.

Methuselah is the oldest mouse at the abbey and its dedicated recordkeeper. He possesses the rare ability to speak and understand the languages of various woodland animals and birds. Living in the quiet gatehouse among dusty volumes, he guides the younger generation in uncovering the abbey's hidden secrets and ancient riddles.

Abbot Mortimer is the elderly leader of the Order of Redwall. He devotes his life to healing the sick and maintaining tranquility in Mossflower Woods. He firmly believes the era of warriors has passed, preferring diplomacy and peaceful cooperation over armed conflict. He initially dismisses the threat of violence, trusting in the security of the abbey walls.

Constance is a large, fierce badger who serves as the primary protector and combat trainer for the abbey. She uses her immense strength and tactical mind to organize the defenses against the invading rats. She refuses to be intimidated by threats and boldly leads the physical defense of her home, often constructing clever traps to repel attackers.

Asmodeus is a gigantic, highly venomous adder living in an old sandstone quarry across the river. He hoards stolen treasures and paralyzes victims with a hypnotic gaze. The mere sound of his hissing name strikes terror into the hearts of all woodland creatures.

Warbeak is a combative young sparrow who belongs to a fierce flock living in the high rafters of the abbey roof. She is the niece of the flock's erratic ruler and next in line for leadership. Despite her initial hostility toward the ground-dwelling woodlanders, she respects bravery and fairness, eventually evaluating situations independently of her flock's traditional prejudices.

Cornflower is a quiet, attractive young field mouse who assists in the kitchens and infirmaries. She wears a distinctive yellow headband and provides practical support to the abbey's defenders by delivering hot meals to the ramparts. Her quiet demeanor hides a quick-thinking bravery when her home is directly threatened.

King Bull Sparra is the despotic ruler of the sparrow flock. He suffers from a short temper and unpredictable moods, keeping his subjects in a constant state of turmoil and fear. He fiercely guards his territory from all outsiders and hoards stolen items in his high nest.

Martin is a legendary heroic mouse who founded the Order of Redwall after saving Mossflower from ancient barbarian hordes. Though a historical figure, his legacy, hidden artifacts, and cryptic riddles heavily influence the current generation's fight against evil. His image inspires the woodlanders and terrifies their enemies.

Basil is an eccentric, energetic hare with military training and an enormous appetite. He uses his speed, long legs, and sharp wit to run distraction missions, taunting enemies and leading them on wild chases through the woods to aid his smaller allies.

Sela is a gypsy fox who survives by her wits and extensive knowledge of herbal medicine. She operates as an opportunistic counterspy, looking to profit heavily by selling military secrets to both sides of the war.

Chickenhound is a young, self-centered fox who assists his mother with healing and espionage. He shares her opportunistic nature, constantly seeking ways to acquire loot and exploit chaotic situations regardless of who wins the war.

Jess is an athletic, agile squirrel and devoted mother. Her unmatched climbing abilities make her an invaluable asset for scaling high walls and retrieving items from dangerous heights during the siege.

Silent Sam is a baby squirrel who has not yet learned to speak. He possesses an excellent sense of direction and knows the forest paths intimately, allowing him to lead larger animals out of danger.

Captain Snow is a formidable white owl who commands respect through his predatory nature. He holds valuable knowledge about the surrounding terrain but demands a high price for his cooperation, viewing smaller woodlanders strictly as food until proven otherwise.

Squire Julian Gingivere is an aristocratic, vegetarian cat with refined manners. He completely disdains eating mice and prefers a quiet, orderly life in his barn over hunting or violence.

Log-a-Log is a capable shrew boatman. Like all his kin, he belongs to a highly argumentative, combative tribe, but he proves fiercely loyal and cooperative to those who earn his respect and fight alongside him.

Guosim is the head of the Guerilla Union of Shrews. She leads a combative, vagabond band that harbors a deep hatred for invading rats and predatory snakes, making her a useful, if noisy, companion on dangerous quests.

Dunwing is a sensible sparrow who sees the severe damage her brother's erratic rule inflicts on the flock. She prioritizes the safety of her daughter and quietly aids outsiders to undermine the current violent regime.

Redtooth is a rat lieutenant who serves as second-in-command to the horde's leader. He carries out official threats and demands on behalf of his master, hoping to secure his own status within the ranks.

Shadow is a stealthy black rat specializing in covert infiltration and theft. He relies on exceptional agility and darkness to bypass sentries and steal valuable items from enemy strongholds.

Ragear is an opportunistic rat lieutenant who attempts to desert the horde when the campaign becomes difficult. He gets lost in the woods and concocts cowardly schemes to capture enemies to win back his commander's favor.

Killconey is a ferret serving in the invading horde. He specializes in tunneling and directs underground excavation efforts against the abbey defenses, eager to prove his worth among a horde dominated by rats.