Continuity mistake: In the girl fight scene, Jane puts her foot on Donna's neck. In the next shot, the angle of the foot changes. (00:18:40)
Continuity mistake: The position/distance of Holt and Cleveland's beer bottles change at The Broken Stool. (00:03:10)
Answer: In the episode "A Rodent Like This" Rallo discovers that Cleveland Jr. is actually a secret agent who is tracking down Tim, who is actually criminal. Jr. reveals that in order to get close he had to eliminate the real Cleveland Jr. luckily Cleveland doesn't pay attention so it was easy. Whether or not this is canon or not depends on the writers.