Checco Orsi
Checco Orsi was a member of a noble family of Forlì and brother to Ludovico. Bored with their life in the countryside, they started a loan-sharking business, and murdered any who didn't pay their debts.
Once, the brothers were hired by Caterina Sforza to kill her own husband, Girolamo Riario, after finding out that he was a Templar. Riario, who was already in debt to the Orsi brothers, was killed during a meal by the Orsis.
Later, Rodrigo Borgia hired them to obtain the Apple of Eden, an artifact stolen from him by Ezio Auditore, and kill Caterina. The Orsis agreed and laid siege to the city of Forlì. In the progress, they captured two of Caterina's children. Using the children as a distraction for Ezio, Checco attacked the Rocca di Ravaldino, the ward in which Caterina was holding the Apple. Caterina and Niccolò Machiavelli's resistance wasn't enough to protect the Apple and Checco took it. With Checco running of to Rodrigo Borgia, Ezio chased him. Ezio intercepted him, though Checco, with his dying breath, stabbed Ezio in the stomach. Ezio stumbled off with the Apple, though the wound was sapping his strenght. Eventually, he fell to the ground, and, before he lost conciousness, saw how the Apple was stolen from him by a monk with a missing finger. Caterina's guards found Ezio next to Checco's corpse.