The golden age story tells of Aarkus (who was called the Vision before the Synthezoid who was created by Ultron who took the same name) being brought to earth by a scientist named Enoch Mason who found that smoke is the gateway to the supernatural world with his Dimensional Smasher. Mason called fourth Aarkus (and was later revealed to be the keeper of law in a place called Smoke world) Aarkus' first adventure found him defending Dr. Mason and his Daughter from Brains Borelli, a mobster who funded Enoch's experiments and wasn't paid back. It was stated that Aarkus could only be seen in his true form by a person who is about to die. but to activate his true form he also needs to be exposed to smoke.
Aarkus was created by Jack Kirby and Joe Simon and first appeared (as Vision) in Marvel Mystery Comics issue 13 (1940). It is very likely that Aarkus has inspired the character also named the Vision some years later, whom became a member of the Avengers.
Mayor Story Arcs
Retelling of Origin
It was later revealed that Aarkus and his people came to Earth-616 from another dimension to answer their true calling in life, which was to help Cosmic Cubes all over the Universe gain sentience. Aarkus was assigned to be the caretaker and a midwife of sorts to the Cosmic Cubes of Earth. Aarkus became distracted from his mission when World War II broke out, which he fought in as both a member of The Axis and The Allies.
Corrupted by D'Spayre
Sometime later; Aarkus was assigned to protect a Cube, that unbeknownst to him, was being corrupted by Humanity's fear and despair. The Cube's corrupting powers began to have a dramatic effect on Aarkus and in the end he was overwhelmed by the demonic being called D'Spayre.
Return As Aarkus
When The Invaders were brought to the year 2008 by a Cosmic Cube, but apparently not the one that was corrupting Aarkus, Doctor Strange, The New Avengers, Paul Anselm and a few of The Invaders found Aarkus hiding with his Cube in an ancient sewer. With Echo‘s help, Doctor Strange took the Cosmic Cube from Aarkus; purified it and then used its power to banish D'Spayre from existence and by doing so restored Aarkus to his true form. He recently helped reunite the original members of the Invaders.