Harder, Better, Faster, Browner - S2-E1
Trivia: Songs shown in the charts are songs in other cartoon shows. References to The Simpsons are "Do The Bartman" by Bart Simpson, "We Put The Spring In Springfield" by Springfield Townspeople, "Baby On Board" by The B Sharps and "Who Needs the Kwik-E-Mart" by Apu. References to Family Guy are "Bag Of Weed" by Brian and Stewie and "You Have AIDS" by Seth MacFarlane. A reference to Futurama is "Leela: Orphan Of The Stars" by Phillip J. Fry. There's also a song by Eric Cartman in the charts as well. (00:16:10)
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.