At the end of 1476, under the leadership of Grand Master Rodrigo Borgia, the Italian Templars planned to unite all of Italy under their banner by a series of conspiracies. Mario's brother, Giovanni, investigated on rumors about a conspiracy against Milan. One night, Giovanni attacked a group of men led by Rodrigo in Florence. The Grand Master fled the scene, but Giovanni captured a henchman who revealed under torture that the Templars wanted to assassinate the Duke of Milan, Galeazzo Maria Sforza, in order to weaken the power of Lorenzo de' Medici in Florence. Giovanni tried to stop the Templars but arrived too late; Galeazzo was killed and his death was avenged by a guard. Giovanni continued his investigation in Venice, where he found a cryptic letter from the Templars. He delivered the letter himself in Rome where he met Rodrigo, who asked him to join the Templars. Giovanni refused and killed Rodrigo's men, but broke his hidden blade and was wounded by the Grandmaster.
After these events, Giovanni made a list of the Templar conspirators and imprisoned Francesco de' Pazzi, a Templar banker who planned to assassinate Lorenzo de' Medici and capture Florence for the Templars. The Templars however, with the help of Giovanni's friend, Uberto Alberti, arrested and executed Giovanni and his sons for treason. Paola, the leader of courtesans of Florence, helped the last son of Giovanni, Ezio Auditore da Firenze, in his quest for revenge. During his stay at the brothel, she taught him stealth techniques such as pickpocketing and blending, and later informed him how and when to kill Uberto.
After Ezio killed the Gonfaloniere, he fled Florence with his mother and sister and went to Monteriggioni, where his uncle revealed the truth about his father. Mario taught combat skills and secrets of the Brotherhood to his nephew to convince him to take the place of his father in the search for the Codex pages. Ezio refused to join the Brotherhood but helped Mario to attack San Gimignano, which was controlled by the Templars and killed Vieri de' Pazzi. Learning the Templars plot against Florence, Ezio resolved to kill every single Templar responsible for the death of his father and brothers and continue the search for the Codex pages. Mario decided to train Ezio through Assassins who would hide their affiliation to let Ezio find the truth himself.
In 1478, Ezio Auditore was helped by La Volpe, the leader of the thieves' guild in Florence, who informed him that a Templar reunion would take place under Basilica di Santa Maria Novella. Ezio eavesdropped on the reunion and learned of the Templars' plan to assassinate Lorenzo de' Medici and his brother, which would allow them to take power in Florence. Ezio prevented the murder of Lorenzo, and killed Francesco de' Pazzi. After this, the five co-conspirators fled the city. Ezio tracked them down however, and with the help of Mario's mercenaries, assassinated every Templar involved in the Pazzi conspiracy. These actions made the Medici powerful allies of the Assassins for many years.
Several years later, around 1481, Antonio de Magianis, an Assassin who led the thieves guild of Venice, fought the Templar merchant Emilio Barbarigo, who sought to unite every merchant under his banner to control every district of Venice. Antonio launched an attack on Emilio's palazzo, but failed, and many thieves were captured as a result. Ezio, who wanted to kill the Templar for his involvement in his father's death, helped Antonio to reconstruct the guild and killed Emilio in 1485. To take control of Venice, the Templars planned to murder the Doge, Giovanni Mocenigo, and have one of their own take his place. Ezio and Antonio failed to prevent the poisoning and the Templar Marco Barbarigo was elected Doge.
In 1486, Ezio returned to Venice and with the help of Antonio and Teodora Contanto, leader of the courtesans in Venice, killed the new Doge during the Carnavale. Marco's brother, Agostino Barbarigo, an ally of the Assassins, took his place as Doge. The Templars took the Arsenale to make a diversion while they travelled for Cyprus. Bartolomeo d'Alviano, a Condottiero, attacked the Arsenale, but was captured. Ezio saved him and his men and launched a surprise attack on the Arsenale. He killed Silvio Barbarigo and his bodyguard, Dante Moro, who revealed that the Templars were in search of a secret object in Cyprus.
The Assassins and the Templars were searching for the Codex pages, which contained information about a vault, where an object of immense power was hidden. Only "The Prophet" could open the vault with two Pieces of Eden: the Apple and the Staff. Rodrigo Borgia believed he was The Prophet and wanted to acquire the artifacts for himself. In 1488, the Templars expedition in Cyprus was successful, and they returned to Venice with the Apple, with Rodrigo himself travelling to Venice to retrieve the artifact. After learning that the man responsible for the death of his kin was in Venice, Ezio disguised himself as a guard and confronted Rodrigo. Mario and the others Assassins, who supported Ezio during his quest, joined him in the fight. Rodrigo escaped, but the Assassins obtained the Apple. They revealed to Ezio that they were all Assassins and that Ezio was The Prophet himself. After this, Ezio was officially inducted into the Brotherhood.
The Assassins decided to hide the Apple in Forlì, a city controlled by Caterina Sforza, an ally of the Assassins. Ezio and Niccolò Machiavelli escorted the Apple to Forlì, but the city was attacked by the Orsi brothers, who were hired by Rodrigo to find the map of Girolamo Riario which revealed the location of the Codex pages. During the battle, the Orsi were assassinated, although Ezio was wounded and had lost the Apple. He later learned that the Apple was taken by a Florentine monk with a missing finger, Girolamo Savonarola. Before beginning his investigation on the monk, Caterina gave Ezio the map of her dead husband, which helped the Assassin complete the Codex Wall.
In 1491, during his search for the Apple, Ezio helped the Spanish Assassins, who were hunted by the Spanish Inquisition, who in turn, worked for the Templars. He saved the Assassins and rescued the king Muhammad XII of Granada, which stopped the war between Spain and Grenada. He also saved Christopher Columbus from the Templars, who wanted to reach the New World before any other country.
In 1497, Ezio returned to Florence, where Savonarola had taken the Apple, used it to control the leader of the city and exiled the Medici. Ezio, Paola, La Volpe and Machiavelli started a revolt against Savonarola's rule. Ezio killed the lieutenants and the other Assassins led the population against Savonarola. One year later, Ezio retrieved the Apple after Savonarola was attacked by the mob.Just before Savonarola was about to be burned alive in public, Ezio assassinated the monk, as he believed that no one should have to suffer such a horrific fate. Before the population, Ezio demanded to the crowd to follow their own free will, and not anyone else like Savonarola, the Medici, or himself.
Rodrigo Borgia, who became Pope Alexander VI in 1492, acquired the Staff of Eden, which when combined with the Apple, could open the vault. The Assassins sent Perotto Calderon as a courier to discover secrets and intercept letters. However the Assassin fell in love with Lucrezia Borgia, the daughter of Rodrigo, and when she become pregnant in 1498, Perotto was imprisoned. The Assassin escaped, and took his deformed son to the Shroud of Eden to save him, which was under the protection of the Assassins in Agnadello. Perotto was forced to kill his brothers to heal his son. A group of Assassins was sent to kill Perotto, seen as a traitor to the Brotherhood. After his death, some Assassins, like Rinaldo Vitturi left the Brotherhood due to the misuse of the Shroud.
In 1499, the Assassins collected all of the Codex pages and with the Apple, they discovered that the vault was under the Sistine Chapel. Ezio went to the Vatican and confronted Rodrigo Borgia. After defeating Rodrigo, Ezio spared his life after realizing that killing him him would not solve anything. He entered the vault and met a strange being by the name of Minerva, an individual of the First Civilization. She warned the descendant of Ezio, Desmond Miles, that a catastrophic event which would wipe out civilization would occur soon, just like in the past, and that he was the only one who could save the world. After this, a bewildered Ezio left the vault with the Apple and returned with Mario to Monteriggioni. 
In Monteriggioni, Ezio informed the Assassins and his family of what he found in the vault and the fact that he spared Rodrigo, which Machiavelli considered as a mistake and left the Villa. Enraged by the Assassin victory, Cesare Borgia, Rodrigo' son, rallied his army and attacked Monteriggioni. The attack was short but fierce, and the Templars managed to reclaim the Apple of Eden, kill Mario Auditore, and capture Caterina Sforza. Wounded during the battle, Ezio decided to go to Rome to retrieve the Apple and avenge the attack, but fell unconscious during the travel. Niccolò Machiavelli found him and sent him to Margherita dei Campi, to be healed.
After Ezio regained consciousness, Magherita gave him a new set of robes and equipment offered by Niccolò and informed Ezio that Niccolo wanted to see him. The two Assassins planned to take the Apple and kill Rodrigo and his son. With the help of La Volpe, Bartolomeo d'Alviano and his sister, Claudia Auditore who took leadership of the courtesans of Rome, the Assassins had a strong network in Rome. In 1501, Ezio went to Castel Sant'Angelo, to find the Apple and kill his targets, but could only save Caterina.
Understanding that the Borgia power was based on Rome, Ezio decided to induct new apprentices into the Brotherhood, recruited from the population of the city, and attack Cesare's lieutenants and allies such as the Cento Occhi, the Followers of Romulus and the French army led by Octavian de Valois. He created a group of Assassins, led by Francesco Vecellio, which through Italy sabotaged Cesare power, killing his allies and protecting individuals who could opposed against Cesare. They also convinced Rinaldo and other former Assassins to rejoin the Brotherhood. Ezio also sent recruits around Europe and Asia to perform missions, as well as helping other Assassin branches in Barcelona, Calicut, Constantinople and Paris against the Templars, helping rulers in England and the Holy Empire or installing new guilds across Europe.
In August 1503, the Assassins managed to destroy Cesare's defenses and his War Machines, thwarting Cesare's plans for invasion, and cutting off his funds by killing Juan Borgia as well as the support of the French army with the death of Octavian de Valois. The Assassins found also a key which opens one of the doors in the Castel Sant'Angelo. After Claudia was inducted to the Brotherhood and Ezio became the Mentor of the Brotherhood, Cesare returned to Rome to use the Apple to reverse the situation. As his father refused to give him the Apple and learning that he tried to poison him, Cesare killed his father in a rage. Ezio found the Apple and used it against the remnants of Borgia forces during the end of the year. In December 1503 Cesare was imprisoned by the new Pope, Julius II, who became an ally for the Assassins.
Cesare tried to escape but Ezio stopped him and Cesare was sent to a prison in Spain. The Assassins fought the Borgia's diehards who stayed in Rome. In 1506, Cesare escaped from his prison and rallied an army to conquer Spain, Rome and Italy. Ezio Auditore followed him to Valencia and Viana, where he eventually managed to kill Cesare while he led a siege against a castle. After Cesare's death, the Templars in Italy were eradicated, allowing the Assassins to gain more power and influence, as well as acquiring more allies.
After the destruction of the Templars in Italy, Ezio formed stronger ways of communication for the Assassins from Sicily to Venice and created standardized training methods for new recruits.
In 1509, Bartolomeo d'Alviano fought in the Battle of Agnadello to protect the Shroud against the army of Louis XII of France. Bartolomeo was captured and his cousin, Niccolò di Pitigliano, took the artifact for himself. In 1510, Francesco Vecellio tracked Niccolò in Lonigo, created a revolt against the condottiero. With a team of Assassins, Francesco stroke the manor, mortally wounded Niccolò and took the Shroud for the Brotherhood.
During these more peaceful times, Ezio Auditore left for Masyaf to search for Altaïr's library. During his absence Claudia led the Assassins and contacted Desiderius Erasmus, the Mentor of the Northern European Assassins, who was concerned about the work of Martin Luther which could trouble the peace in Europe. Upon Ezio's return, he decided to retire and appointed Lodovico Ariosto as the new Mentor.
In 1519, Giovanni Borgia, the son of Perotto Calderon and Lucrezia Borgia, who became an Assassin, went to Mexico with the troops of Hernán Cortés to find a Piece of Eden, a Crystal Skull which was used by the Aztecs for sacrifices. During the Night of Sorrows, Giovanni stole the artifact and brought it to Bombastus. Later in 1527, Giovanni was sent to Paris to search the second half of the Book of Abraham, which contained occult knowledge. Giovanni, with Maria Amiel, took the second half and discovered Pythagorean symbols. The two lovers went to the Temple of Pythagoras and contacted an individual from the First Civilization, Consus.
By 2012, an Assassin cell led by Adriano Maestranzi operated in Florence. That year, Adriano would frequently correspond with Assassin leader William Miles. On 5 September 2012, Adriano tracked down William's son, Desmond, who had been captured and taken to Rome by the Templars and called William for further instructions. Adriano offered to rescue Desmond with his team, but was stopped by William, who assured him that his mole in Abstergo Industries would keep Desmond safe.
As William's team attempted to flee Italy, Harlan Cunningham, a member of the Italian cell, received a text from William on 16 October, telling him that the Templars were onto them and that they were going into hiding. On 25 October, Harlan was again contacted by William, who asked for his assistance in escaping Italy. At 9:51am on 27 October, Harlan led an ambush on Abstergo's tactical Delta Team, killing several of the Templar agents and allowing William's team to escape from the Templars' tail. Harlan sent William a text at 10:38am, informing him that they only lost one Assassin in the skirmish, and that one of the Templars had "lost it" during the battle.
After William's team had entered the Grand Temple, Adriano learned that the Templars were attempting to hack into the Assassins' systems to track their location. On 27 November, he sent an e-mail to William stating that he had decided a "hostile takeover" was in order, and had his cell prepare for a raid on the Abstergo headquarters in Rome.
On 28 November 2012, at 5:08pm, Harlan sent a message to William from the Provincial road SP11 in Italy, informing him that they had infiltrated the Abstergo campus and killed four hackers along with some guards, and destroyed their servers, which meant Abstergo could not track William. After returning to the safe house in Florence on 29 November, Harlan discovered that he or another member of the cell had been tracked back to the base. He sent a message to William at 10:42pm, informing him that an attack was imminent, but that Adriano was refusing to leave.
The following morning, at at 6:27am, a Templar strike team led by Juhani Otso Berg attacked the hideout. Once they reached inner sanctum where Adriano was located, he used a bomb to blow up the hideout, killing himself alongside most of the Templar strike team, save for Berg himself. The explosion also destroyed the Assassins' files, preventing their contents from falling into Templar hands. Harlan, the only Assassin survivor, fled to Bologna, and, on 1 December at 12:20pm, sent a message to William informing him of what happened, and that he was "going dark". William responded by telling him to stay strong.
- Assassin's Creed: Lineage （首次登场）
- Assassin's Creed II
- Assassin's Creed II: Discovery
- Assassin's Creed: Renaissance
- Assassin's Creed: Project Legacy
- Assassin's Creed: Brotherhood
- Assassin's Creed: Brotherhood novel
- Assassin's Creed: Revelations （仅提及）
- Assassin's Creed: Revelations novel
- Assassin's Creed: Revelations – Discover Your Legacy
- Assassin's Creed: Memories
- Assassin's Creed: Recollection
- Assassin's Creed: Initiates
- Assassin's Creed: Assassins
- Assassin's Creed: Reflections
- Assassin's Creed: Identity
- Assassin's Creed: Brotherhood of Venice
- ↑ 1.0 1.1 《刺客信条：秘密圣战》
- ↑ 2.0 2.1 《刺客信条：启示录》
- ↑ 《刺客信条百科全书》
- ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 《刺客信条II》
- ↑ 5.0 5.1 5.2 5.3 5.4 《刺客信条：传承计划》
- ↑ Assassin's Creed: Lineage
- ↑ Assassin's Creed II – Battle of Forlì
- ↑ Assassin's Creed II: Discovery
- ↑ Assassin's Creed II – Bonfire of the Vanities
- ↑ 10.0 10.1 10.2 10.3 10.4 10.5 Assassin's Creed: Brotherhood
- ↑ Assassin's Creed: Revelations novel
- ↑ 12.0 12.1 12.2 12.3 12.4 12.5 12.6 Assassin's Creed: Initiates – Desmond Files
- ↑ Assassin's Creed: Rogue