Other mistake: The block of apartments that Robert lives in is two stories tall. Yet a few seconds later Rallo says "Man, we're three stories up". How can they be three stories up if the block of apartments is only two stories tall? (00:04:05)
Continuity mistake: When Cleveland suggests Tim should take in Robert, the four beer bottles in front of them change position between shots. (00:10:00)
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.