From the basic build of a Echidna, RG is covered with a robotic exo-skeleton. Pure white, the armored plates are shaped to resemble the curves and contours of a living body, with gaps in the armor to compensate for the movement of breathing and flexing. The face has no features, except for a red-LED light that reaches across half of his head. (Like Mecha Sonic.) The dreads are rigid, with much less movement than an organic's would have. A faint red light glows from underneath all the gaps and chinks in the armor. Sleek, hardly noticeable Jet-packs are mounted on his back, strong enough to add a boost to his jumping, but not nearly enough punch for sustained flight. The arms simply melt into hands identical to an organic Echidna, enlarged knuckle spikes and all. The feet connect to the legs similarly, and resemble Nazo's, tapering at the front. (Oh, and if it's not too much, I'd like his left arm to be morphed into this weapon from R&C.) Like Omega's arms turning into various weapons.