Before the rise of 4U City, the native Riff of the Dimension of Rain was betrayed by the same dimensions Dr. Schlock. He used his emergency DFA to teleport into a random wasteland dimension, where Zoë (DoR) died of her wounds. Living with a carib, Riff worked intensively on modifying DFA technology and monitor dimensions for 30 years before discovering a way back to the Dimension of Rain. He also found a way of looking back in time through the dimensional window, tracing the rise and evolution of 4U city.