What else could explain the massive change in character? Also, part of his hypothalamus got damaged in the process, explaining his current girth. * Alternatively, the second-to-last mishap to befall the Browns at Peter's hands gave Cleveland Jr. permanent brain damage. Which is why the last one pissed Cleveland Sr. off so much. * Clevelend Jr. could have gotten on A.D.D medication that caused him to mellow out. The fact that he was no longer engaging in so much physical activity caused him to gain weight. * Or, shades of Principal Skinner, the real Cleveland Junior wandered off in one of his hyperactive phases while in Loretta's custody. Desperate to not screw up her undeserved divorce agreement, she found the overweight boy we see, and 'Uh-Huh!' insisted the weak-willed Clevelan