An unnamed, advanced race of aliens appear in the comic, operating from a deep-space installation where they constantly watch the cosmic crystalline prison of the seven Ogdru Jahad.
Biology
The aliens are humanoid, possessing grey skin and wear bulky armored suits. Their craniums appear to have some ridges that run down the tops of their head and possess flat faces and slit nostrils. Unlike humans they appear to possess four fingers. At least one individual has show to be capable of altering their appearance via some sort of mental ability or advanced technology.
Background
One of the aliens known as the Visitor was stationed on Earth since ancient times.
In 1944, the Visitor was disguised as an Allied soldier and was present when the Anung Un Rama arrived on Earth. With the appearance of the one who would destroy the world before him, the alien assassin discreetly took out his prism to eliminate the being, but stopped when Professor Trevor Bruttenholm urged the soldiers around him not to harm the child who he named Hellboy. Seeing that the humans could offer mercy to a monster like Hellboy, the Visitor reconsidered his order to kill the child. After separating from the Allies he reported his change of heart to his superiors that he could not kill the child even if he was the great destroyer. He believed that despite Hellboy's demonic origins, he still had the blood of a human from his mother. For now Hellboy was an innocent and could not be blamed for the circumstances of his birth. His superior thought that the Visitor's decision was too fastidious and urged him to complete the assignment and return to the station before they were out of range from Earth. The Visitor was steadfast in his choice and promised that if Hellboy turned to the darkness he would correct his mistake. For now the Visitor was allowed to remain on Earth and watch Hellboy develop secretly shadowing on his missions and defying his destiny.
Known members: