The Powerpuff Girls Best Rainy Day Adventure Ever / Just Desserts - S2-E10
Continuity mistake: When Marianne calls Harold to the table, the plant in the middle disappears as they climb on top of it.
Continuity mistake: Wolverine first enters the sewers by ripping away a fence in the subway. When Jubilee and Gambit follow him, the fence is still intact. When they get closer it is torn again. Odd, really, because on the whole this show has few continuity errors, like self-mending clothes in other cartoons.
Eeyore's Tale of the Missing Tail / Pooh, Light Up My Life - S1-E4
Continuity mistake: In "Eeyore's Tale Of The Missing Tail", Lumpy ties the rope and rock to Eeyore, but when the Super Sleuths come it is gone.
The Bing That Wouldn't Leave / You Promised! - S1-E11
Continuity mistake: In "The Bing That Wouldn't Leave" Bing often changes size. Most of the time he's about half as tall as Norbert and Daggett but most notably near the end when he hugs Daggett he's about the same size as him.
Give Me Your Princess - S1-E17
Continuity mistake: Commander Keith pilots the blue lion for part of this episode since the princess is trying to learn to fly the black lion. When Keith is transported to the lion it is the black lion.
Laugh, Ed, Laugh/It's Way Ed - S1-E10
Continuity mistake: In "Laugh, Ed, Laugh", when Eddy is gambling with squirrels, he picks up a bunch of nuts, primarily acorns and only a couple of peanuts. But next shot later when he yells, "Suckers!", there are more peanuts shown. (00:05:00 - 00:11:15)
Continuity mistake: When they first enter the Y'Lyntian city and are attacked by the Lava Wraiths, Raphael gets his sai melted by them. But after taking their goodbyes from Versallia, Raphael has his sai stuck back in his belt.
Continuity mistake: At the end of the battle between Jaden Yuki and Gravekeeper's Chief, just as the explosion settles, in one shot you see the Gravekeeper's Spear card to the left of Gravekeeper's Chief on the duel disk. However in the next shot Gravekeeper's Spear is replaced with Magician of Black Chaos, which Chief neither has in his deck or ever played in the match. (00:13:35)
Continuity mistake: The pothole with the mud that Rupert Thorne's henchman kicks at Harvey Dent appears from nowhere. When the henchman is shown kicking the mud, the pothole is located between the police officer behind the henchman's right shoulder and Harvey's assistant Carlos on the henchman's left. However, in the previous shot, the ground shown between the police officer and Carlos contains no pothole. (00:04:35)
Continuity mistake: When Lemmy falls down from the window and running away from Bowser with Iggy, Iggy's face turns orange. Then later, it turns back to green.
Spider's Little Daddy/Tricycle of Terror - S3-E1
Continuity mistake: Mandy's working on her report. The page she's on says "CORN by Mandy." A moment later, she writes the same title on another page.
Continuity mistake: When Dum-Dum cuts the rope releasing Chug-a-Boom from the balloon, we cut to the car and you can see Clyde and Dum-Dum are surrounded by the rest of the Ant Hill Mob, but when we see the two in the next shot, the other members are nowhere to be seen.
Burple Nurples/Shnitzel Makes a Deposit - S1-E2
Continuity mistake: In "Shnitzel Makes a Deposit", Truffles tears off a check from a checkbook and gives it to Shnitzel. A few shots later, the page where she tore off the check is back to normal.
Continuity mistake: When Daria is on the couch with her dad she's holding a mug but the next shot it's a glass. (00:15:39)
Neogenic Nightmare Chapter 4: The Mutant Agenda - S2-E4
Continuity mistake: When Spider-Man is battling the X-Men, he shoots webs at all of them, which they remove. Later when Spider-Man is in Xavier's study with the X-Men, Gambit is shown removing a piece of webbing from his right arm, even though he had already removed it earlier. (00:02:15 - 00:04:30)
The Blue Lotus: Part 1 - S1-E8
Continuity mistake: The background behind the Maharajah and Tintin changes between shots as they watch his son and Snowy. (00:01:40)
Continuity mistake: When Chris is trying to activate Hummingbird Power, his skin is suddenly lighter than in the previous shot.
Fruit Picking Day/Daniel Is Big Enough to Help Dad - S1-E11
Continuity mistake: The fruit on Miss Elaina's hat changes colors.
Triumvirate of Terror! - S3-E8
Continuity mistake: Right at the beginning, the camera closes in on a baseball field. It shows several people standing and walking out in the field and just two standing up by home plate. The view changes to behind home plate and suddenly there are several superheroes sitting and stretching there, and the rest of the field is empty. Then after a shot of Jimmy Olson in the commentator stand, it shows a high view of the field again and the people have all changed again. (00:00:10)
Continuity mistake: Before Charlie says to Lola "You must double-triple promise you'll never play with it", he places the rocket beside a black box. Later in the episode, when Lola attempts to get the rocket down to play with it, the rocket is now on top of the black box.