Continuity mistake: When Cleveland and Donna notice Rallo has disappeared out the window, the window changes size between shots. (00:14:20)
Other mistake: In the scene when it shows how everyone got "Rallo'd", Donna is shown having been on the receiving end of the black eye binoculars trick. However, the pencil circle around her eye is is too big for the size of the binoculars' eye piece. (00:03:35)
Cleveland Jr. Cherry Bomb - S1-E5
Audio problem: When the audience is applauding Cleveland, applause is heard but no-one's hands are moving. (00:04:05)
Continuity mistake: When Cleveland and the Child Services agent are hiding behind the couch during the gunfight, the bullet holes in the wall next to them change position between shots. (00:18:45)
Continuity mistake: At the start of the meeting, Ernie is wearing no socks. But when Lester says "I ain't leaving with out my son", Ernie suddenly is wearing socks. (00:17:15)
Other mistake: Lester's house is directly across the street from Cleveland's. However, when the Child Services agent runs out of Lester's house with Ernie, he runs at 2 o'clock direction (which would be towards Holt's house), but instead ends up in front of Cleveland's house, which is in a 12 o'clock direction. (00:11:20)
There Goes El Neighborhood - S3-E9
Continuity mistake: When Junior and Cecilia are talking in the cafeteria, a boy with a blue waistcoat can be seen in the shots of Cecilia. The boy is eating a sandwich, and has a cup on the tray in front of him. In the shots of both Junior and Cecilia, the boy has no tray in front of him and is holding a milk carton instead of a sandwich. (00:08:45)
There Goes El Neighborhood - S3-E9
Other mistake: Cleveland had a VIP Sky Box installed for the big game. Yet when Cleveland is actually watching the game not only is he not sitting in it, but there is no sign of it either. (00:00:45 - 00:03:35)
Plot hole: Cleveland never tells his friends where Cecilia lives. Yet Lester is somehow able to call Immigration & Customs Enforcement and direct them to Cecilia's house. (00:14:05 - 00:15:10)
Continuity mistake: When Junior starts singing and Cecilia joins in making them a duet, the shot cuts to Cleveland. After this it cuts to a wide shot where we can see Cleveland doing nothing. In the next shot, he's suddenly finished drinking from a glass. (00:11:00)
Other mistake: After Cleveland introduces his friends to Junior's girlfriend Cecilia, Holt says to Cleveland he managed to take a picture of Cecilia without her noticing. However there are two reasons Holt couldn't have been able to take the picture with Cecilia standing in the position she was in. One, Cecilia was never standing in that particular position at any point during the conversation. And two, Cecilia was standing next to Junior the whole time. If it was the right way round, Junior should have been in the picture with Cecilia when Holt took it. (00:07:50 - 00:08:50)
Continuity mistake: Junior isn't able to fit through the door after returning from Choni's Cantina (the first time). Yet Junior is able to fit through the door in other episodes. (00:04:15)
Continuity mistake: Ms. Eck shows Roberta her grade and she says it's a C minus. However, the paper shows the grade is an E minus. (00:04:00)
Continuity mistake: When Cleveland Junior walks into the locker room to see his locker has been broken into, the door behind him is open. Two shots later, the door is now closed. (00:15:05)
Continuity mistake: In the 1984 flashback, when Cleveland chases Wally, Wally trips and drops his computer. When this happens, the computer goes off screen. But in the next shot, all the damage from the computer is right next to him. (00:01:40)
Other mistake: Cleveland shoots the living room ceiling, but the position of the hole is much further to the right from where the gun was pointed. (00:15:35)
Dancing with the Stools - S3-E10
Other mistake: Cleveland drops his yellow top hat when he hurts his leg. But keep an eye on the hat when it's on the floor. You'll see it is in an unrealistic position. (00:01:30)
Continuity mistake: When Cleveland notices the family and neighbours are there for his intervention, we can see Arianna and Holt standing right next to each other. In the next shot, Arianna is in visible but there's no sign of Holt. He was too close to Arianna to be out of frame. (00:09:35)
Continuity mistake: When Cleveland sees everyone in his bedroom, Arianna's bracelet changes which arm it is on between shots. (00:09:35)
Continuity mistake: When Cleveland walks into the kitchen after being gone for two days, Robert's plate is full of breakfast. A couple of shots later, Robert's plate is nearly empty without enough time to eat the food on the plate. (00:06:40)
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.