- The Elder Gods are widely hated by the fans. They're fully aware of the terrible things going on in the games, and even more so, that these escalating battles could undo reality as we know it. Despite this, they never lift a single finger to help.
- It took until 2011, nearly twenty years since the franchise even started, for the series to demonstrate why the Elder Gods were so ineffectual. It turned out that they were obligated to abstain from stopping Kahn's takeover of Earth because he had to actually enter Earthrealm without winning it in the tournament; since in the first timeline he was beaten back before he could set foot on it, he was actually being protected from the Elder Gods by his sworn enemies. Raiden soon figures this out and allows Kahn to enter Earth, which finally invokes the wrath of the Elder Gods who send Kahn to eternal damnation for breaking the rules. But then one realizes that it was the Elder Gods who made the rules this way to begin with rather than assigning themselves to the defense of all the realms with or without Mortal Kombat, so that doesn't really redeem them by much.
- The original Mortal Kombat 1 had Liu Kang. His high-pitched screeching grated the ears of many and his lackluster fatality came off as an Anvilicious enforcement of his Shaolin lifestyle. The creators took note and made him as violent as everyone else for the rest of the series.
- Mortal Kombat 3 gave us Nightwolf. Ethnic Scrappy? Check. Game Breaker? Check. Thankfully, he was fixed by Deception.
- Worse still was Stryker prior to MK 9. Word of God is they wanted him to contrast the rest of the roster, but a beer gut and backwards baseball cap was taking things a bit too far. Generally fans felt he was way out of place, being a terrible male counterpart to Sonya Blade and a generic police officer in a game with a mystical storyline. And to some extent, he was a bit of a Tier-Induced Scrappy due to his move pool.
- Chameleon, while not completely despised by the fan base (granted he generates reactions of "Meh" more than "Arguh" or "Awesome"), but he certainly is one in the eyes of the developers. Notably he originally wasn't going to be on the roster of Mortal Kombat: Armageddon until fan outcry called them to include him (And even then only for the sake of having every fighter in the series to that point in the game rather than any particular character loyalty) and also was one of the first two characters that Netherrealm Studios confirmed would not be returning. For those wandering what that other character is, it's Hsu Hao. Yeah the fact that he's seen as being on Hsu Hao's level of disfavor tells one a lot about how the creators feel about him. The fact that he is a Flat Character with virtually no story other than to seek to be the greatest fighter of all time for no grander purpose than its own sake and has relied on having versions of other pre-existing characters moves doesn't do him any favors.
- Motaro has many detractors who feel that the idea of a centaur in a fighting game is too goofy even for Mortal Kombat standards. The fact that he appears more frequently on worst character lists than best character lists (and even then only when it is extended to more than thirty characters as UGO's ranking of 31 on its top fifty list is the highest he's ever been on anyone's ranking of MK characters) is a further testament to his lack of popularity.
- Mortal Kombat 4 had a Replacement Scrappy in the form of Jarek given he had no real personality and all his moves were clearly Kano's, including his trademark laser-eye-beam fatality, despite not even having a laser eye. He was swapped in for Kano late in development due to a desire for a new character. He was fixed a bit in Armageddon, giving new moves, and as a result, he's currently a Base-Breaking Character.
- Hsu Hao from Mortal Kombat: Deadly Alliance, to the extent that even the creators dislike him. Even to this day, Netherealm Studios alluded to their dislike of his character:
Fan: (upon seeing Kano's design) Would Hsu Hao be jealous of that chest piece?Ed Boon: Yes, and we don't care.
- Actually Hsu Hao reappears in the MKX comics as well... for about one or two pages, in which he is instantly and brutally killed by Scorpion, who tells him to buzz off.
- To a lesser extent, Mokap for being a joke character. His concept was ridiculous and scrutinized for being lazy, and even made Screw Attack's "Top Ten Worst Mortal Kombat Characters" list.
- Drahmin for being difficult to control (he's one of the only playable characters that had no dial-a-combos), not to mention the irritating flies that follow him around.
- Bo' Rai Cho gets a fair bit of hate. A lot of players felt the weaponized vomiting and farting weren't all that funny. The fact that many perceive as a Creator's Pet as of MKX, when he was made a DLC Character rather than several more popularly requested fighters, did do any favors for him.
- Moloch is also hated for being an incredibly cheap midboss. Both he and Drahmin were killed in the MKX comic.
- In Mortal Kombat: Deception most of the newly introduced Deception characters qualify for this, with the exception of Havik and to some extent Ashrah.
- Shujinko, who is a flipping idiot and a Replacement Scrappy for Liu Kang. He gets killed by Cassie Cage in her ending.
- Darrius and Dairou. They're seen as not really fitting in with the MK storyline in general. Darrius catches some extra flak for being a Flat Character and a poor man's version of Jax.
- Kira for ripping off Sonya and Kano.
- Kobra for being a poor man's Ken Masters.
- Ashrah, while noted above to have some fans, but she is certainly disliked by detractors who view her as a pale imitation, if not a poorly made rip off, of Sareena.
- In Mortal Kombat vs. DC Universe, DC fans seemed to view Baraka and Jax as this. Ironic since you'd think they'd enjoy the opportunity to see Batman and Superman attack Baraka, a violent mutant with Blade Below the Shoulder.
- Mortal Kombat 9's story has gotten Sindel a lot of hatred, to the point many are labelling her as this. She appears out of nowhere and effortlessly kills many well liked characters in rapid succession.
The Scrappy / Mortal Kombat
Generally, most of Mortal Kombat's scrappies emerged from the post-2D games. Given that many fans could probably count the few popular characters introduced from MK4 all the way to Armageddon on their fingers and still have a few to spare, this was a bit unsurprising.