Diego Malina is a heavyset, Hispanic man with a shaved head who appeared to be in his mid to late forties in 2011, which would put his birth in the early to mid 1960's.
On the 23rd of November 2006, he is seen by Jack Barnabas meeting Agnes Montague at her flat with other members of the so-called Cult of the Lightless Flame and holding what appears to be an unlit lantern. Shortly after this, Agnes Montague is found dead in her flat having apparently hanged herself.
In August of 2011, Malina is encountered by police officers Basira Hussain and John Spencer at the scene of a fire near Clapham in which arson was suspected. At the time he was an assistant curator of a Mexican museum who accompanied an exhibition on loan to the natural history museum, though the museum claimed that he had not been seen for several weeks. When firefighters arrived at the fire, Malina attacked them and was subdued while attempting to flee. Despite exiting the burned structure, he did not have any burns himself. When approached by Basira, he was heard to be saying the phrases "cleansing fire" and "all shall be ash", as well as the name "Asag" - a Sumerian demon associated with disease and corruption which could boil fish alive in the rivers. When Basira attempted to cuff him the metal of the handcuffs became incredibly, though invisibly, hot. He then whispered something to Spencer, which seemed to leave him shaken. When Malina was taken into the police station his only personal property was a small book bound in red leather. Officer Spencer would be suspended for attempting to burn the book with a Zippo lighter, and he was soon after found dead after having apparently committed suicide by submerging himself in boiling water.
On December 23, 2011 a heavyset, middle-aged man with no hair was admitted to St Thomas Hospital with second degree burns covering his entire body - though it is not clear whether he had any hair prior to the burns. Despite the extensive burns his clothes seem to have been totally unaffected. He arrived unconscious with another burned man, Gerard Keay, who was also unconscious. They had been found by firefighters near St Mary's churchyard responding to reports of a fire at a nearby building site. The fire service found no actual fire but the ground had burn marks and a nearby metal bar was bent as though from great heat. Some time after the men were treated by nurse Lesere Saraki, she heard the heavyset man whispering "Asag, wypalać, the lightless flame." Later that night, nurse Saraki realized that the hospital appeared deserted by anyone physically capable of leaving. She then noticed a sound like a growl and a vibration in the floor, which appeared to be coming from a soft drink vending machine in which all the drinks were boiling. Upon attempting to leave, she found the doors too hot to open and while trying to locate another exit she heard that the heavyset man's chanting had grown louder. He appeared to be awake, though he was staring blankly at the ceiling. Nurse Saraki moved to silence the man, but was stopped by Gerard, who implied that his own burns resulted from touching the man. Gerard asked her if any possessions had been brought in with him, specifically a small book bound in red leather and his brass pendant. She told him that no such things were with them and he went to retrieve a scalpel from a locked supply closet. As she let him pass he said to her, "Yes, for you better beholding than the lightless flame." Gerard then walked over to the heavyset man, muttered something indistinct, and plunged the scalpel into the man's throat. The wound was accompanied by sizzling and the smell of burning, rotten meat. The wound blackened and spread across the man's body as it burned to ashes. Gerard swept up the ashes and gave them to nurse Saraki for disposal, before returning to sleep in his hospital bed. A police report was filed based on the man's disappearance from the hospital, but nothing ever came of it.