Quattro Bajeena, Kamille Bidan, and Gundam MK. II from "Mobile Suit Z Gundam".
In making this wallpaper in paint program, I used line tool to create a horizontal line separating the background in two. Using the fill-with-color tool, I colored the upper half with red (to match with Quattro's uniform) and the lower half with blue (to match with Kamille's usual military uniform). Then I placed the animescan I chose to use for this wallpaper on the left and the "Z Gundam" logo on the right.
Fans of retro mecha anime (including those of classic "Gundam") will sure love this!