Why not just download it from the marketplace? When you go to add it to a project it will usually prompt you to choose a version. If you choose a pre- 4.8 version you’ll get the blue guy if I’m not mistaken. Unless you mean the old-OLD, pre- animation pack blue guy. Then you could go through the Unreal Engine channel 3rd Person youtube tutorials. I think there’s a link in there for the original blue guy but, keep in mind there were like 4 different characters before 4.8. There was the blue guy with only unarmed animations, the animation pack blue guy, Owen from the Content Examples file, and the FPS demo guy. These characters are all different.