Behold, a Distant Star - S2-E10
Character mistake: When Sue is brought out of surgery, her father can be seen wearing a watch. Surgeons don't wear watches or any other kind of jewelry when performing surgery, as they can't be sterilized and can also get in the way of gloves. (00:05:00)
Mojovision - S2-E11
Character mistake: When the title screen for Beast and Rogue's television program appears, Beast's real name of Hank McCoy is incorrectly spelled as "Hank Macoy."
Character mistake: When Cleveland sees Auntie Mama urinating in the toilet, we can see angle of where she is standing is totally different to where the toilet is. (00:06:50)
Character mistake: Another identity mistake in the finale: When Beast Boy's team is initially subdued, we see honorary Titan Hot Spot standing amongst the villains even though he is a) a hero and b) is supposed to be frozen solid at that time.
The Calculus Affair: Part 2 - S1-E13
Character mistake: After reaching the border, Snowy finds an umbrella and Tintin states that it is Calculus's umbrella. It isn't Calculus's umbrella - Calculus's umbrella has a brown handle, and this one has a grey handle. (00:42:25)
Character mistake: Despite being a Greek mythology buff Maxie Zeus says "Vulcan" when he meant "Hephaestus" the Greek god of fire and the forge when he first spoke with Batman.
The M.O.D.O.K. That Time Forgot! - S1-E2
Character mistake: M.O.D.O.K. refers to Hoobastank as "the Beatles of the late 90's." Hoobastank only released one album in the 90's, and they didn't become popular until after they released their second album in 2001.
Mystery on the Prarie - S3-E14
Character mistake: If Chris and Martin are creature experts, they would have already known the buffalo birds are nest parasites.
Butch Mario & the Luigi Kid - S1-E3
Character mistake: When Mario notices the sign for free food, the sign for the sheriff misspells it as "shpriff". (00:11:00)
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.
Character mistake: When Commander Cody says "We'll get right on it", Obi-Wan responds with "No, Captain", calling him by the wrong rank. (00:05:18)
Champion vs. Creator, Part II - S1-E27
Character mistake: Pegasus says his toon world cannot be penetrated, but that is not true since it's a magic card, so any card that destroys magic cards can destroy it. Furthermore, monster special effects can also destroy it.
Character mistake: After Alexis has White Knight Queen attack Sparkman and then has Snow Fairy attack Card Trooper, Jaden tells her that Sparkman's ability activates, which allows him to draw one card. This is not correct; it is actually Card Trooper that has the ability to let him draw one card, not Sparkman. (00:06:44)
Until Sunset, the Full Moon - S1-E7
Character mistake: Zenigata uncovers Elena's arm saying he noticed the mark when she was fighting "those guys previously." Which guys? Her assailant was just one dude. (00:13:40)
Fenikkusu! Jigoku o mita senshi - S1-E6
Character mistake: When Jabu gets maimed by the Nebula Chain attacking from above, the commentator says "One point for Andromeda Shun." Points? There never were points during the previous fights. (00:11:05)
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)
Opera House Murder Case: File 2 - S1-E22
Character mistake: Like the previous episode, Fuyuko Tsukishima's name is transliterated wrongly in "Tukishima" on the cover of the diary.
Six Forgotten Warriors Chapter 4: The Six Fight Again - S5-E5
Character mistake: When the Red Skull reemerges from the vortex, he sees Chameleon and acknowledges him as his stepson. However, only moments before this, Kragov explicitly stated that the Chameleon was more like an adopted son to the Red Skull.
Character mistake: When Luigi is about to jump into the Warp Pipe to Pipe Land, he says Mario told him to wear a Frog Suit, but it was actually Princess Toadstool. Mario repeats this error after Luigi asks if he is all right. (00:06:58 - 00:10:01)
Coming Home - S1-E13
Character mistake: Kamaria Ray thinks back of her son shooting at the Zeon troopers with a mental image that is wrong; Amuro was not shooting from the bed, but from the door. (00:15:20 - 00:19:20)