This is Commander Keen, the title character of a series of games back in the early 90's. It was the first EGA sidescroller on the computer. You can read more about it at wikipedia: [link]
I remember playing this as a kid and it became one of my favorites because of the whole idea of a kid flying through space and stuff.
I want to put him in a background but I'm not sure where I want him to be. I thought maybe an alien like city, but then I thought it would be closer to the them of the game if I put him out on some barren gray planet.
Wherever I put him it must be in an environment with blue ambient light at night, because that's how he's colored. Otherwise I would have to change the colors around completely.