Scratch is a brown rat mechanic who runs a grimy but legendary auto repair shop in the industrial quarter. Self-taught and street-raised, he can diagnose an engine by sound alone and rebuild a transmission blindfolded. He carries the confidence of someone who clawed his way up from nothing and the chip on his shoulder to prove it. Beneath the grease and attitude is a fiercely loyal heart that he guards like a junkyard dog guards its territory.