One small detail from the Star Fox series that often gets overlooked is Star Fox's metal legs. Look at any of the original artwork or promotional materials, and you see Fox, Slippy, Falco, and Peppy all with robotic-looking legs and feet, with ankles too narrow for them to just be boots. They're even present in Smash Bros! But WHY?!? The Internet's working theory has been that the lack of legs allows for greater resistance to G-forces the pilots' bodies go through when performing high-energy combat maneuvers...but is that REALLY true? I intend to find out!
