Sci-Fi's real name is Seymour P. Fine, and his rank is that of corporal E-4. Sci-Fi was born in Geraldine, Montana.
Sci-Fi's primary military specialty is infantry, and his secondary military specialty is electronics. Sci-Fi is known for being patient and taking his time, traits which aid him in aiming a laser over long distances for extended periods of time. When Sci-Fi braces his weapon and sights in on a target, he becomes as immobile as a rock, with no discernible movement of any kind. At a range of 2 1/2 miles, the impact spot of laser light will jump one hundred feet for every one thousandth of an inch movement at the source. Sci-Fi transcends mere stillness to hold that spot on target, long enough to burn through that source.
Sci-Fi took a leave of absence to complete his master's degree in electrical engineering, returning with the skill set necessary to enact unparalleled enhancements to the security systems in G.I. Joe headquarters.
As part of the Star Brigade aeronautical group, Sci-Fi was the designated pilot for the G.I. Joe Starfighter.
Sci-Fi first appeared in the second season G.I. Joe episode "Arise, Serpentor, Arise!" Pt. 1. He and Low-Light upstage Wetsuit and Leatherneck during target practice.
In the episode "My Brother's Keeper," Sci-Fi accompanies Sgt. Slaughter in a mission to prevent Doctor Mindbender and the Dreadnoks from abducting a handicapped scientist named Dr. Jeremy Penser from a science fiction convention. Interestingly enough when Slaughter goes to get him he is seen watching The Transformers.