:[[File:170px-ACBH-screenshot3.jpg|thumb|The doctor using lethal Injection on the Courtesan]][[File:Unknown_doctor_guy20100818094840811_640w.jpg|thumb|left|160px|An unknown/customized version of the Doctor (far-left)]][[File:Poison_Man.jpg|thumb]]
:[[File:170px-ACBH-screenshot3.jpg|thumb|The doctor using lethal Injection on the Courtesan]][[File:Unknown_doctor_guy20100818094840811_640w.jpg|thumb|left|160px|An unknown/customized version of the Doctor (far-left)]][[File:Poison_Man.jpg|thumb]]
:''For the NPC's in [[Assassin's Creed II]], see [[Doctors]].''
:''For the NPCs in [[Assassin's Creed II]], see [[Doctors]].''
:''"A peculiar looking stranger. Harmless might he seem, yet his strength, stealth and speed remains unmatched by the most."''
:''"A peculiar looking stranger. Harmless might he seem, yet his strength, stealth and speed remains unmatched by the most."''
His outfit highly resembles the ones worn by doctors during the plague and appears black in the dark. His face is concealed by a mask, therefore making his true identity unknown. His outfit is different than what the doctors wear in Assassin's Creed II. The beak section of his mask is shorter than the ones worn by the doctors in Assassin's Creed II. Ubisoft said that he will make an appearance in the single player mode of Assassin's Creed Brotherhood along with the other multiplayer characters.
Unique moves
The Doctor charges at his target and swiftly thrusts a syringe into the target's shoulder injecting poison into a vein, before the victim can recollect what has just happened his/her eyes roll back and he/she then collapses to the ground and dies silently.