Genos, Saitama, and Sonic from One-Punch Man HD Wallpaper

Three anime characters, Genos, Saitama, and Sonic, are depicted in a triptych. They are all wearing military-style uniforms and hats. The background behind each character varies in color, with Genos on the left against red, Saitama in the center against blue, and Sonic on the right against purple.