Evangelos Constantinou

Evangelos Constantinos was a doctor at the Dhekelia SBA Memorial Hospital in Cyprus where Venom Snake was monitored during his coma. Constantinos had been working at the hospital since at least March 12, 1979.

The Phantom Pain
On February 29, 1984, three days after Snake's coming to, Constantinos arrived at his ward and conducted basic motor and memory tests. He then informed him about the fact that his coma had lasted for nine years. This triggered a shock in Snake which forced Constantinos to restrain him and call for the nurse to sedate him.

On March 4, Constantinos enlightened Snake about the injuries he had sustained from the attack on Mother Base nine years earlier that placed him in a coma. He told him that there had been 108 foreign bodies inside his body, including fragments of human bone and teeth, as well as multiple pieces of shrapnel, rendering MRI-based examination impossible.

Although most of the foreign bodies could be removed successfully, the surgeons were unable to extract pieces of shrapnel which were close to Snake's heart and inside his cerebral cortex. Removal would have been likely to cause heart failure and a brain hemmorage, triggering unavoidable physical and mental impairment.

Constantinos acknowledged that, hallucinations aside, it isn't fatal to Venom Snake at all. He also inferred that the same accident resulted in Venom Snake losing his left forearm, with the latter going into shock again upon verifying this, thus forcing Constantinos and the nurse to restrain and sedate him again.

On March 11, he revealed that Venom Snake was the subject of an international manhunt, especially one with orders to kill on sight, and they intended to give him plastic surgery to hide his identity, also giving him the name "Ahab" as a cover identity.

Constantinos and the nurse were strangled to death by Quiet using a garrote.

Behind the scenes
Evangelos Constantinos first appeared in the VGA 2012 trailer, The Phantom Pain, back when it was advertised as being a separate IP that Swedish developer "Moby Dick Studio" was allegedly making. During this time, one of the clues some fans and sources used to indicate that The Phantom Pain was really a Metal Gear game was the fact that they thought that the doctor bore a resemblance to Kio Marv. This was later revealed to have been a coincidence. He later appeared in the same scene as in the VGA trailer for the GDC 2013 trailer of Metal Gear Solid V: The Phantom Pain, only this time, he also addressed how long the patient (Big Boss) was in a coma.

Although Hideo Kojima stated that the doctor was modeled after British-born Japanese-based actor Ian Moore in a podcast after The Phantom Pain was announced as Metal Gear Solid V, it has been noted that he bares a strong resemblance to a real life doctor named Sergio Canavero. He, however, has denied having any official contact with Konami beforehand, and has threatened to sue them for using his likeness without permission.

Although the doctor was not verbally named in The Phantom Pain, his name can be read on his ID card.