Ratchet is an anthropomorphic Lombax, resembling a bipedal, furry feline. He has bright yellow fur with brown stripes, notably on his ears and tail, and large, expressive green eyes. He's typically seen wearing a mechanic's jumpsuit or armor, often carrying his signature Omniwrench. His physical build is athletic and agile, suitable for jumping and combat. Clank is a small, green-grey robot. He's significantly smaller than Ratchet, often riding on Ratchet's back like a backpack. Clank has a rounded, compact body with thin limbs, and a distinctly "robot" appearance with visible joints and metallic sheen. He has large, expressive green eyes and a generally calm, intelligent demeanor, contrasting Ratchet's more boisterous nature.