Read more about Mainframe at: Wikipedia

Official Site: Hasbro

Mainframe is a fictional character from the G.I. Joe: A Real American Hero toyline, comic books and animated series. He is the G.I. Joe Team's communications expert and debuted in 1986.

Born in Phoenix, Arizona, Mainframe's real name is Blaine L. Parker, and his rank is sergeant E-5.

Mainframe was both an athlete and a scholar as a child, though as a self-confessed nerd, he would much rather learn about computers than do anything else. He graduated high school at the age of seventeen, and immediately enlisted in the Army airborne. He soon headed into battle overseas, receiving his Combat Infantryman Badge, and later left the army to get his degree from MIT on the G.I. Bill. Mainframe then did a stint developing computer software in Silicon Valley, making big bucks and fighting boredom with a stick. Luckily, the Marines were looking for a few good men with just his qualifications, and Mainframe was soon back in uniform. He even served at the Pentagon for a time, before joining the G.I. Joe Team as a computer specialist.

The world's ever-increasing reliance upon technology makes him a valued member of the G.I. Joe Team, and his ability to design computer viruses makes him a nuisance to Cobra Command.

Mainframe has not been a contender in any CBUB matches.