- The original Mortal Kombat 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
- Nightwolf. Ethnic Scrappy? Check. Game-Breaker? Check. Thankfully, he was fixed by Deception.
- Worse still was Stryker, prior to his more popular re-imagining in MK 9. Word of God is they wanted him to contrast the rest of the roster, but a beer gut and backwards baseball cap were 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 fanbase (who are rather apathetic about him), is certainly loathed by the developers. He wasn't even going to be on the roster of Mortal Kombat: Armageddon until fan outcry persuaded them otherwise.note It doesn't help that Chameleon's entire reason for competing is to become the greatest fighter ever, purely for its own sake, or that he doesn't really have any moves of his own. The developers confirmed he was one of two characters who would not be returning in Armageddon. The other one... was Hsu Hao. That alone says quite a lot about how the developers feel about him.
- Motaro has many detractors who feel that the idea of a centaur in a fighting game is too goofy even for Mortal Kombat standards, not helped by his insane difficulty in his debut and the updates thereof. The fact that he appears more frequently on worst character lists than best character listsnote is a further testament to his lack of popularity. In the Mortal Kombat 9 story he is quickly confronted and killed by Raiden in a cutscene during the Outworld invasion of Earthrealm... which, if you did not blame Raiden for this, then him dying ends up being not a good thing, it results Shao Kahn enhancing Sindel greatly and causes the death of the majority of the cast, so he also participates in the series' most infamous mass slaughter by dying.
- Mortal Kombat 4
- Jarek is considered to be a Replacement Scrappy for Kano. 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 since they simply wanted a new character instead. He was fixed a bit in Armageddon, being given new moves, so now he's a Base-Breaking Character.
- Meat is unpopular because he's essentially a Flat Joke Character. He wasn't even a character as such to begin with - his texture mapping was, as a joke, unlockable for any character you chose to play after doing something specific in MK4. He had none of his own moves - his name wasn't even in the game, he was always identified as the character onto whom his texture mapping was placed. Technically, his only real appearance was in Armageddon.
- Mortal Kombat: Deadly Alliance
Fan: (upon seeing Kano's design) Would Hsu Hao be jealous of that chest piece?Ed Boon: Yes, and we don't care.
- Hsu Hao, to the extent that even the creators dislike him. Even to this day, Netherealm Studios have alluded to their dislike of his character:
- 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, 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 in the case of the former 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
- The story mode has gotten Sindel a lot of hatred. She appears out of nowhere and effortlessly kills many very powerful and well liked characters in rapid succession. Not to mention the reason Sindel's so powerful is Shao Kahn instantly kills longtime series villain Shang Tsung with a wave of his hand and gives her the sorcerer's strength.
- More than a little hate has been directed at Raiden in MK9, as many feel his decisions were not terribly intelligent and contributed to an Idiot Plot. His other appearances in the franchise are generally more popular.
The Scrappy / Mortal Kombat
Generally, most of Mortal Kombat's scrappies emerged from the post-2D games. Considering 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 isn't surprising. There does seem to be some hope the developers are starting to learn as Mortal Kombat X introduces a slew of new characters with relatively little hate coming their way.