Big Red is one of those wonderful toylines that was created specifically for a catalog, in this case the Speigel catalog. A mix of Big Jim and GI Joe, I’ve had many folks tell me about having Big Red as a kid but honestly, I’ve never seen one as a collector.
He kind of looks like Dr. Benton Quest.
AKA Brian Heiler author of "Rack Toys: Cheap, Crazed Playthings" and co-editor of "Toy-Ventures Magazine". Co-Host of the "Pod Stallions" podcast. Host of the Brick Mantooth Youtube channel, painter, designer, writer, mental health advocate, toy collector, Mego, and Mego Knock-Off enthusiast. I have large feet, ADHD and I live in Canada. Talk toys, not others. 
@brickmantooth
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What an interesting action figure. Doesn't seem to be any information about him online. It looks like the pictures use two different bodies, the majority of them look to be on Mego's Fighting Yank body, but the one in the green suit, the arms at least are Mattel's Ken.