Not much about Raymond Warren's past is known except that he was the brother of Miles Warren (Jackal) and the science teacher of Peter Parker (Spider-Man) during his high-school years.
Raymond Warren was created by Stan Lee and Steve Ditko and first appeared in Amazing Fantasy Vol. 1 issue 15 (1962).
Major Story Arcs
Teacher Raymond Warren was a science-teacher at Midtown-High, whom encouraged Peter Parker to keep on learning. A strange fact is that he is also the brother of Miles Warren, the person that became the Jackal.
Raymond Warren has not been seen much, but has had a profound impact on Peter Parker's life as he motivated him to keep up his good grades, and perhaps is partly responisble for how Peter was formed and the man he has become.