The Prison Prep School Murder Case File 1 - S1-E10
Character mistake: To show how hard the top students are working at the prep school, we see one of them writing; "I was at the course of a eight-week intensive." (00:04:50)
Character mistake: The episode opens showing "The LLUSTRATED morning " newspaper. Yes, it is missing the letter "i." (00:00:15)
Character mistake: When Cyclops is expressing his opposition to sending his infant son into the future to cure his virus, he states he won't be like his own father and abandon his son. The problem is Cyclops' father didn't abandon him, but rather saved his life. Their family airplane was being attacked, and they were about to be abducted by the Shi'ar. Cyclops' father strapped a parachute to him and got him out of the plane before it crashed. Cyclops learned and made peace with all of this in the original series episode "Orphan's End." (00:25:04)
Character mistake: Bruce and Alfred play a short game of chess, after which Alfred remarks, "I don't know why we bother playing this game - you never lose." The problem is, Alfred moved into a position wherein Bruce could take his king; this is called "moving into check" and is not allowed in chess.
Life's Ruff - S1-E20
Character mistake: When first showing the Florida State Poochitentiary, the white sign in front of it misspells the name as "Florida State Poochitentary." (00:06:41)
Character mistake: In s01e08, "Q and A", Yelena moves her bishop to B6. The announcer says that's going to win it (the game gets interrupted at this point). However, that move does not put the computer (her opponent) into checkmate, it doesn't even put it into check. Her bishop is on a dark square and the computer's king is on a white square.
Character mistake: When Shikata disappears after she loses her powers, Peter drops the sword and he, Mary Jane and two pedestrians behind them are shown looking in the direction that Shikata was just standing in. A third pedestrian, standing to the left of the shot, can be seen but is looking in a completely different direction to the others. (00:18:37)
Change of Heart/A Hole Lotta Love/Mime to Five - S1-E7
Character mistake: Mime to Five: In the "Featuring" section of the opening credits, Cro-Marmot's name is missing the hyphen, so it incorrectly reads "Cro Marmot." (00:14:43)
Character mistake: When King Koopa runs away from Kooky's machine, he says for it to let him go before he is grabbed. (00:08:13)
Character mistake: Lucy Liu-bot says Fry's name normally, but uses an automaton voice for "Can eat more", when she has always used Fry's name as a Text-to-speech type of automaton voice. (00:07:45)
Character mistake: Dexter's father says he'll stunt jump over four school buses, but only three are shown.
Mine Your Own Business - S1-E4
Character mistake: When Shaggy and Scooby order Sarsaparilla at the saloon, Scooby says "Two" but he appears to be holding up three fingers.
Character mistake: The title card says "Plummers Academy" instead of "Plumbers Academy."
A Frightened Hound Meets Demons Underground - S1-E14
Character mistake: Velma mentions Seattle burned down in 1890. The fire went from June 6-June 7 1889.
Timmy the Barbarian/No Substitute for Crazy - S5-E18
Character mistake: In 'No Substitute for Crazy", When Timmy and Sanjay are leaving the school after Mr. Crocker falls down the well, a few cats come up to them and he introduced an orange one as "Omar." Later, when Mrs. Sunshine is leaving after being substitute for a day, Sanjay has cats around him and comforts "Omar", except he says this to a red cat, not an orange cat.
The Hairy Scare of the Devil Bear - S1-E8
Character mistake: Velma says bears only have four claws. Wrong, they really do have five claws.
Character mistake: When Cheryl, Pam and Alan Shapiro are talking on the movie set, the store behind them has a typo: Stationary should be spelled "stationEry'. (00:10:30)
Invasion of the Ferb Snatcher/Ain't No Kiddie Ride - S2-E28
Character mistake: In 'Ain't No Kiddie Ride' Carl reminds Major Monogram that he has no sense of smell and that he was born without nostrils noting it on his resume. But in 'Brain Dead' when Major Monogram sees Perry wearing a face mask he points out that Carl is also a germaphobe. Carl corrects him saying "It's not the germs sir, it's the garlic smell." He wouldn't be able to smell anything since he has no nostrils. (01:10:00 - 01:35:00)
Character mistake: Bessie's last name is misspelled "Higginbottom" on the newspaper Happy shows her.