Sprung from the minds of the great comics team of Joe Simon and Jack Kirby, the Vision first appeared in the Golden Age, and enjoyed a healthy run in Marvel Mystery Comics. He has also made appearances in recent years. According to Wikipedia:

"The Golden Age Vision, also known as Aarkus, is an alien law enforcement officer from a dimension called Smokeworld. While Aarkus is looking for a suitable place to exile a prisoner, he is accidentally contacted by an Earth scientist named Markham Erickson. Leaving the prisoner on the planet Jupiter, Aarkus accepts Erickson's invitation to fight crime on Earth. Aarkus does so for several years, although during World War II, he is briefly manipulated by the Axis powers into fighting the Allies. The superhero team the Invaders, however, manage to help Aarkus realize his mistake."