The back cover of the five episode VHS tape "Dream Scheme" shows Buttercup beating up Him who does not appear in any of the episodes on the tape, and the episode list says "PLUS a Courage the Cowardly Dog bonus toon!" while the bonus non Powerpuff toon is actually the pilot to Sheep in the Big City.
Subverted in Phineas and Ferb where Candace immediately dismisses books based on their covers; when her mom says not to judge a book by its cover Candace argues that books have covers to capture peoples' interest, and then asks her mom why she picked these books. Linda begrudgingly admits because they looked interesting and leaves.
Likewise Ed, Edd n Eddy title cards barely have anything to do with the episodes or characters, though occasionally you might get an in-sight onto the characters designs.
Re-releases of Scooby-Doo television films and collections that contain Scrappy-Doo no longer depict him on the box cover nor mention his presence anywhere in the blurbs, despite Scrappy being a major character in those productions. This is likely due to the massive anti-Scrappy backlash of the post 80s era.
This also extends to the My Little Pony Tales DVD releases in Australia. Understandably, it only reinforced the confusion of "which generation does Tales belong to?" that was already widespread among collectors and fans of the show at that time.
The My Little Pony: Friendship Is Magic Season 1 DVD box set prominently features Princess Cadance on the disc 3 label art. Cadance wasn't introduced until the finale of Season 2.
The cover art for the DVD My Little Pony: Friendship Is Magic: "Adventures in the Crystal Kingdom" shows the Mane Six all in new crystal forms. Forms that the cast only take at the end of the twoparter, and which only get a minute or two of screen time. Furthermore, the bright colors and smiles on everyone's faces give no indication that "The Crystal Empire" is one of the series' darker adventure episodes.
The back of My Little Pony Equestria Girls shows the Mane 6 as humans with their ears and tails intact. This appearance only happens at the very end of the movie, and furthermore it was a power-up.
The box art and title screens for Dingo Pictures's productions often depict characters that don't appear in the cartoon... or characters with a different role than they actually have. And the artwork is usually much better.
The animated TV series of 101 Dalmatians has yet to make a DVD release, and the only episode that ever got a video release was the Christmas Episode. The title of the video reads "A 101 Dalmatians Christmas", when it's actually called "A Christmas Cruella". Not only that, but the cover shows Pongo, Lucky, Rolly, Cadpig, Tripod, Wizzer, Dipstick, Patch and Two-Tone playing around with presents and Christmas decorations giving the impression that that is what the special is all about, when really, a majority of it is focused on Cruella.
The Pound Puppies (2010) DVD, "Homeward Pound", shows the Super Secret Pup Club on the front and back covers, but Cupcake and Patches do not appear in any of the episodes featured on the DVD. In fact, all the episodes included on the DVD are from Season 1 and came out before either of those pups made their debut in the series.
The DVD cover of Yogi's First Christmas is actually a promotional image for Yogi Bear's All Star Comedy Christmas Caper.
A very mild case, however the titular mask on the BIONICLE: Mask of Light movie's poster doesn't actually look like as it does in the film, having been modeled after the real LEGO piece, whereas the film uses a stylistic, simplified design.
The cover art for the DVD release of Tiny Toon Adventures: How I Spent My Vacation depicts Buster, Babs, Plucky, Hamton, Elmyra and Dizzy on a ride at Happy World Land. In the actual movie, Hamton's family and Plucky are the only ones who actually go to Happy World Land, and they don't even go on any of the rides, much to Plucky's dismay. One minor exception to this might be towards the end of the film when Buster and Babs are involved in the mine cart chase with the killer, at one point in the chase, it turned out the mine cart ride was an attraction at Happy World Land.
The makers of the Justice League Unlimited DVD box sets (at least the ones released in the US) seem to have been confused. The “Season One” set actually contains all the episodes from the first two seasons. The “Season Two” set contains the episodes from the third (and final) season—but the screenshots on the packaging are all from second-season episodes. Furthermore, all the artwork of Hawkgirl for both seasons is of her in her classic costume, one she ditched at the end of the original series and doesn't wear at all in Unlimited.
The Hi-Tops Video release of It Was a Short Summer, Charlie Brown depicts the cast at the beach on the front and back cover, but the special itself involves the characters going to summer camp.